Content complements of: https://wordpress.org/news/2015/10/wordpress-4-4-beta-2/
WordPress 4.4 Beta 2 is now available for download and testing. This is software still in development, so we don’t recommend that you run it on a production site. To get the beta, try the WordPress Beta Tester plugin (you’ll want “bleeding edge nightlies”). Or you can download the beta here (zip).
For more of what’s new in version 4.4, check out the Beta 1 blog post.
If you think you’ve found a bug, you can post to the Alpha/Beta area in the support forums. Or, if you’re comfortable writing a bug report, file one on the WordPress Trac. There, you can also find a list of known bugs and everything we’ve fixed.
Four-four beta two
Another week of progress
REST API lives!