Fonte: https://wordpress.org/news/2016/03/wordpress-4-5-release-candidate/
The release candidate for WordPress 4.5 is now available.
We’ve made 49 changes since releasing Beta 4 a week ago. RC means we think we’re done, but with millions of users and thousands of plugins and themes, it’s possible we’ve missed something. We hope to ship WordPress 4.5 on Tuesday, April 12, but we need your help to get there.
If you haven’t tested 4.5 yet, now is the time!
Think you’ve found a bug? Please post to the Alpha/Beta support forum. If any known issues come up, you’ll be able to find them here.