Настройка языковой версии компонент news news.list news.detail на одном домене из одного инфоблока с языковыми свойствами _RU _EN. Рассмотрим на примере сайта где основной язык русский (в корне сайта), и второй язык английский в папке en. В первую очередь, вызов компонент осуществляется в каждой языковой папке.

\public_html\news\index.php — для вывода версии ru на странице новостей сайта
\public_html\en\news\index.php — для вывода версии en на странице новостей сайта

Содержимое index файла новостей en компонеты bitrix:news:

<?$APPLICATION->IncludeComponent(
   "bitrix:news",
   "news",
   array(
      "ADD_ELEMENT_CHAIN" => "N",
      "ADD_SECTIONS_CHAIN" => "N",
      "AJAX_MODE" => "N",
      "AJAX_OPTION_ADDITIONAL" => "",
      "AJAX_OPTION_HISTORY" => "N",
      "AJAX_OPTION_JUMP" => "N",
      "AJAX_OPTION_STYLE" => "Y",
      "BROWSER_TITLE" => "-",
      "CACHE_FILTER" => "N",
      "CACHE_GROUPS" => "Y",
      "CACHE_TIME" => "36000000",
      "CACHE_TYPE" => "A",
      "CHECK_DATES" => "Y",
      "COMPONENT_TEMPLATE" => "news",
      "DETAIL_ACTIVE_DATE_FORMAT" => "j F Y",
      "DETAIL_DISPLAY_BOTTOM_PAGER" => "Y",
      "DETAIL_DISPLAY_TOP_PAGER" => "N",
      "DETAIL_FIELD_CODE" => array(
         0 => "",
         1 => "",
      ),
      "DETAIL_PAGER_SHOW_ALL" => "Y",
      "DETAIL_PAGER_TEMPLATE" => "",
      "DETAIL_PAGER_TITLE" => "Страница",
      "DETAIL_PROPERTY_CODE" => array(
         0 => "NAME_EN",
         1 => "DETAIL_TEXT_EN",
         2 => "",
      ),
      "DETAIL_SET_CANONICAL_URL" => "N",
      "DISPLAY_BOTTOM_PAGER" => "Y",
      "DISPLAY_DATE" => "Y",
      "DISPLAY_NAME" => "Y",
      "DISPLAY_PICTURE" => "Y",
      "DISPLAY_PREVIEW_TEXT" => "Y",
      "DISPLAY_TOP_PAGER" => "N",
      "HIDE_LINK_WHEN_NO_DETAIL" => "N",
      "IBLOCK_ID" => "14",
      "IBLOCK_TYPE" => "*****",
      "INCLUDE_IBLOCK_INTO_CHAIN" => "N",
      "LIST_ACTIVE_DATE_FORMAT" => "j F Y",
      "LIST_FIELD_CODE" => array(
         0 => "",
         1 => "",
      ),
      "LIST_PROPERTY_CODE" => array(
         0 => "NAME_EN",
         1 => "PREVIEW_TEXT_EN",
         2 => "",
      ),
      "MESSAGE_404" => "",
      "META_DESCRIPTION" => "-",
      "META_KEYWORDS" => "-",
      "NEWS_COUNT" => "20",
      "PAGER_BASE_LINK_ENABLE" => "N",
      "PAGER_DESC_NUMBERING" => "N",
      "PAGER_DESC_NUMBERING_CACHE_TIME" => "36000",
      "PAGER_SHOW_ALL" => "N",
      "PAGER_SHOW_ALWAYS" => "N",
      "PAGER_TEMPLATE" => "modern",
      "PAGER_TITLE" => "Новости",
      "PREVIEW_TRUNCATE_LEN" => "",
      "SEF_FOLDER" => "/en/news/",
      "SEF_MODE" => "Y",
      "SET_LAST_MODIFIED" => "N",
      "SET_STATUS_404" => "N",
      "SET_TITLE" => "N",
      "SHOW_404" => "N",
      "SORT_BY1" => "ACTIVE_FROM",
      "SORT_BY2" => "SORT",
      "SORT_ORDER1" => "DESC",
      "SORT_ORDER2" => "ASC",
      "STRICT_SECTION_CHECK" => "N",
      "USE_CATEGORIES" => "N",
      "USE_FILTER" => "N",
      "USE_PERMISSIONS" => "N",
      "USE_RATING" => "N",
      "USE_RSS" => "N",
      "USE_SEARCH" => "N",
      "USE_SHARE" => "N",
      "SEF_URL_TEMPLATES" => array(
         "news" => "",
         "section" => "",
         "detail" => "#ELEMENT_CODE#/",
      )
   ),
   false
);?>

Для каждого сайта вызывается своя компонент, где указываются соответствующие языковые свойства для списка новостей в параметре LIST_PROPERTY_CODE
Для детальной новости выбираются значения свойств в параметре DETAIL_PROPERTY_CODE
SEF_FOLDER — путь при переходе в новость
SET_TITLE — Чтобы убрать заголовок в детальной новости

Для корневого ru сайта будут:

"LIST_PROPERTY_CODE" => array(
   0 => "NAME_RU",
   1 => "PREVIEW_TEXT_RU",
   2 => "",
),
"SEF_FOLDER" => "/news/",

Настройка компоненты bitrix:news.list расположенной на главной странице

\public_html\local\templates\corp-template\bti\inc\en\main\news.php
\public_html\local\templates\corp-template\bti\inc\ru\main\news.php

<?$APPLICATION->IncludeComponent(
   "bitrix:news.list", 
   "news", 
   array(
      "ADD_ELEMENT_CHAIN" => "Y",
      "ADD_SECTIONS_CHAIN" => "N",
      "AJAX_MODE" => "N",
      "AJAX_OPTION_ADDITIONAL" => "",
      "AJAX_OPTION_HISTORY" => "N",
      "AJAX_OPTION_JUMP" => "N",
      "AJAX_OPTION_STYLE" => "Y",
      "BROWSER_TITLE" => "-",
      "CACHE_FILTER" => "N",
      "CACHE_GROUPS" => "Y",
      "CACHE_TIME" => "36000000",
      "CACHE_TYPE" => "A",
      "CHECK_DATES" => "Y",
      "DETAIL_ACTIVE_DATE_FORMAT" => "d.m.Y",
      "DETAIL_DISPLAY_BOTTOM_PAGER" => "Y",
      "DETAIL_DISPLAY_TOP_PAGER" => "N",
      "DETAIL_FIELD_CODE" => array(
         0 => "",
         1 => "",
      ),
      "DETAIL_PAGER_SHOW_ALL" => "Y",
      "DETAIL_PAGER_TEMPLATE" => "",
      "DETAIL_PAGER_TITLE" => "Страница",
      "DETAIL_PROPERTY_CODE" => array(
         0 => "",
         1 => "",
      ),
      "DETAIL_SET_CANONICAL_URL" => "N",
      "DISPLAY_BOTTOM_PAGER" => "Y",
      "DISPLAY_DATE" => "Y",
      "DISPLAY_NAME" => "Y",
      "DISPLAY_PICTURE" => "Y",
      "DISPLAY_PREVIEW_TEXT" => "Y",
      "DISPLAY_TOP_PAGER" => "N",
      "HIDE_LINK_WHEN_NO_DETAIL" => "N",
      "IBLOCK_ID" => "14",
      "IBLOCK_TYPE" => "*****",
      "INCLUDE_IBLOCK_INTO_CHAIN" => "N",
      "LIST_ACTIVE_DATE_FORMAT" => "",
      "LIST_FIELD_CODE" => array(
         0 => "",
         1 => "",
      ),
      "LIST_PROPERTY_CODE" => array(
         0 => "",
         1 => "",
         2 => "",
      ),
      "MESSAGE_404" => "",
      "META_DESCRIPTION" => "-",
      "META_KEYWORDS" => "-",
      "NEWS_COUNT" => "8",
      "PAGER_BASE_LINK_ENABLE" => "N",
      "PAGER_DESC_NUMBERING" => "N",
      "PAGER_DESC_NUMBERING_CACHE_TIME" => "36000",
      "PAGER_SHOW_ALL" => "N",
      "PAGER_SHOW_ALWAYS" => "N",
      "PAGER_TEMPLATE" => "modern",
      "PAGER_TITLE" => "Новости",
      "PREVIEW_TRUNCATE_LEN" => "",
      "SEF_MODE" => "Y",
      "SET_LAST_MODIFIED" => "N",
      "SET_STATUS_404" => "N",
      "SET_TITLE" => "N",
      "SHOW_404" => "N",
      "SORT_BY1" => "ACTIVE_FROM",
      "SORT_BY2" => "SORT",
      "SORT_ORDER1" => "DESC",
      "SORT_ORDER2" => "ASC",
      "STRICT_SECTION_CHECK" => "N",
      "USE_CATEGORIES" => "N",
      "USE_FILTER" => "N",
      "USE_PERMISSIONS" => "N",
      "USE_RATING" => "N",
      "USE_RSS" => "N",
      "USE_SEARCH" => "N",
      "USE_SHARE" => "N",
      "COMPONENT_TEMPLATE" => "news",
      "SEF_FOLDER" => "/news/",
      "FILTER_NAME" => "",
      "FIELD_CODE" => array(
         0 => "",
         1 => "",
      ),
      "PROPERTY_CODE" => array(
         0 => "NAME_RU",
         1 => "PREVIEW_TEXT_RU",
         2 => "",
      ),
      "DETAIL_URL" => "",
      "ACTIVE_DATE_FORMAT" => "d.m.Y",
      "SET_BROWSER_TITLE" => "N",
      "SET_META_KEYWORDS" => "N",
      "SET_META_DESCRIPTION" => "Y",
      "PARENT_SECTION" => "",
      "PARENT_SECTION_CODE" => "",
      "INCLUDE_SUBSECTIONS" => "Y"
   ),
   false
);?>

В  \public_html\local\templates\corp-template\components\bitrix\news\news\bitrix\news.detail\.default\result_modifier.php и в \public_html\local\templates\corp-template\components\bitrix\news.list\news\result_modifier.php переопределяем стандартные свойства на свои, чтобы не менять шаблон.

<?if(!defined('B_PROLOG_INCLUDED') || B_PROLOG_INCLUDED!==true) die();

if( $arResult['ITEMS'] ):
   $l = strtoupper(LANGUAGE_ID);

   // Языковые версии
   foreach($arResult['ITEMS'] as $k=>$e)
   {
      // NAME
      if( $e['PROPERTIES']['NAME_'.$l]['VALUE'] )
         $arResult['ITEMS'][$k]['NAME'] = $e['PROPERTIES']['NAME_'.$l]['VALUE'];
      // PREVIEW
      if( $e['PROPERTIES']['PREVIEW_TEXT_'.$l]['VALUE'] )
         $arResult['ITEMS'][$k]['PREVIEW_TEXT'] = $e['PROPERTIES']['PREVIEW_TEXT_'.$l]['~VALUE']['TEXT'];
   }

endif?>

А в \public_html\local\templates\corp-template\components\bitrix\news\news\bitrix\news.detail\.default\component_epilog.php добавляем:

$APPLICATION->AddChainItem($arResult['NAME'], $arResult['DETAIL_PAGE_URL']);

для вывода в навигационной цепочке в детальной новости верное языковое название новости.

Для отображения заголовка в списке новостей на странице, нужный заголовок прописываем в шаблон. !очень плохо так делать