WordPress 5.0 的第二个候选版本已发布，这是一个重要的里程碑，因为已越来越接近 WordPress 5.0 正式发布。开发团队将根据本候选版本的反馈，尽快公布最终的发布日期。
要提前体验 WordPress 5.0，可使用 WordPress Beta Tester 插件，也可以在此处下载候选版本（zip）。
有关 WordPress 5.0 的更多细节，请参阅博客说明。
Significant changes
We stopped rendering AdminNotices compatibility component, as this previous attempt at backward compatibility was bringing in numerous incompatible banners and notices from plugins.
An update to the parser to better deal with malformed HTML that could cause a loop. We’re only aware of this in the wild being triggered once in the over a million posts made with Gutenberg, but it caused a loop so we wanted to fix for RC2.
Cosmetic and minor changes in RC2
Accessibility: Simplify sidebar tabs aria-labels.
Make the Image Link URL field readonly.
Internationalization: Merge similar text strings that differed only in capitalization.
CSS: Improve block preview styling.
CSS: Fix visual issues with Button block text wrap.
Fix getSelectedBlockClientId selector.
Fix Classic block not showing galleries on a grid.
Fix an issue where the block toolbar would cause an image to jump downwards when the wide or full alignments were activated.
Move editor specific styles from style.scss to editor.scss in Cover block.
Fix modals in Microsoft Edge browser.
Fix Microsoft IE11 focus loss after TinyMCE init. Add IE check.
Fix Microsoft IE11 input when mounting TinyMCE.
Change @package names to WordPress.