Drupal 8.1.0 RC1 发布了，该版本主要用于即将发布的正式版本测试用，提供了一些新的功能和小的改动，不影响其版本兼容性。
问题修复：
Installs on php-fpm environments may see fatal errors on enabling modules, due to #2572293: Do not rebuild router in kernel.terminate.
There is not yet per-commit testing for MySQL 5.7.9 or MariaDB 10.1.8 (both released October 2015), but there are no known issues with them. We intend to add per-commit testing on one of these databases in the future.
Particular Apache configurations may have issues with serving public file assets. Issue: #2619250: Disabling -MultiViews in .htaccess can cause 500 errors
一些改进：
#2701027 by Gábor Hojtsy: Drupal 8 UPGRADE.txt is misleading in many ways (in its name to begin with)
#1850080 by amateescu, dawehner, Xano, bojanz, martin107, Pancho, alexpott, tim.plunkett, icseh., stefank, Gábor Hojtsy, jhodgdon, tstoeckler: Entity type labels lack plurality, cannot generate UI text based on label if plural is needed
Revert "Issue #1850080 by amateescu, dawehner, Xano, bojanz, martin107, Pancho, alexpott, tim.plunkett, icseh., stefank, Gábor Hojtsy, jhodgdon, tstoeckler: Entity type labels lack plurality, cannot generate UI text based on label if plural is needed"
#2674408 by alexpott: Fix "Drupal.Classes.UnusedUseStatement" standard in core
#2694243 by marthinal, jhodgdon: node_field_data and search_index tables should match on langcode
#2624986 by Arla, heykarthikwithu, bradjones1, kristofferwiklund: Fix regression from #2400197, user edit form expects password reset hash
#2699869 by er.pushpinderrana: deprecation notice for format_string() says to use SafeMarkup::format(), but that is also deprecated
#2697637 by alexpott, xjm: Update composer.json to have correct version numbers
#2698595 by davidhernandez: Named spelled incorrectly in Maintainers file
#2692827 by foxtrotcharlie: Wrong calls to ContentTranslationManagerInterface::setEnabled in FieldEntityTranslationTest
#2696919 by chgasparoto, snehi: EntityResource annotation class has @see after plugin annotation
#2600926 by benjy, mikeryan, phenaproxima, hussainweb, alvar0hurtad0: Allow annotations to inherit across namespaces
#2697291 by maxocub, Gábor Hojtsy, alexpott: Config translation form labels are not translated
#2689655 by cafuego: D8 Comment date views arguments uses incorrect database column
#2489660 by katzilla, lucur, AlviMurtaza, swati_qa, ijf8090, dawehner, Cottser, ayang: Views UI text overlap in older versions of Firefox
Revert "Issue #2678568 by Wim Leers: Ensure good UX & DX even when A) rendering of placeholder fails, B) some response event subscriber fails"
#2661470 by andypost, lauriii: KernelTestBase::render passes wrong values as a parameter for BareHtmlPageRenderer::renderBarePage
#2614824 by alexpott, xjm, catch: Tests fail when version constant is stable
#2664274 by alexpott, bojanz, fortis, Mile23, arknoll, Barryvdh: Combination of --prefer-dist and .gitattributes confuses our vendor test cleanup
Revert Issue #2658956 by Daniel_Rempe, catch, Jeff Cardwell, hctom, tstoeckler, dawehner: Taxonomy vocabulary data not available as views fields
#2678568 by Wim Leers: Ensure good UX & DX even when A) rendering of placeholder fails, B) some response event subscriber fails
#2632314 by alexpott, amateescu, ivanjaros: PluginSettingsBase::getThirdPartySettings() returns null instead of array
#2237101 by Mile23, cordoval, YesCT, dawehner, tim.plunkett: clean up for Core/DependencyInjection CompilerPasses
#2688668 by Berdir, bojanz: Register the new entity revision param enhancer/converter as services
Revert "Issue #2688668 by Berdir, bojanz: Register the new entity revision param enhancer/converter as services"
#2664748 by amateescu, alexpott, TravisCarden: Node revision queries tagged for node access cause "no node table" exception
#2691741 by Lendude: Remove leftover isset() in ViewExecutable
#2686207 by Berdir: Convert simpletest kernel tests in modules A-I to phpunit
#2677414 by blue_waters: VerticalTabs' #default_tab broken due to wrong/mismatching class name
#1458824 by idebr, JvE, mayaz17, cwoky, Henrik Opel: Ajax doesn't work with Tableselect with checkboxes
#2595613 by swentel, krknth, heykarthikwithu, k4v, aerozeppelin, naveenvalecha, alexpott: '#title_display' => 'invisible' does not work for composite form elements
#2685021 by Lendude, cilefen, r0nn1ef, andypost: Fatal error: $this when not in object context in views.theme.inc
#2666650 by alexpott, benjy: Inject migration and source plugin managers into the migration plugins
#2692359 by alexpott, nod_: Use core/drupal.dialog.ajax when using data-dialog-type
#2670170 by quietone, vasi: Add i18n string & variable data to d6_dump
#2692223 by amateescu, Berdir: Bring back the simpletest-based FieldUnitTestBase until 8.2.x
#2678674 by Wim Leers, benjy, mr.baileys, dawehner, xjm, mlhess: Access bypass to unpublished custom error pages
下载地址：https://www.drupal.org/project/drupal/releases/8.1.0-rc1