Worpress 4.5 4 beta has already released for testing and devolopment.. Following are the features of addition and fixes. This is the final planned beta of WordPress 4.5, with a release candidate scheduled for next week.
Add support for oEmbed moments and timelines from Twitter .
More changes to better support HHVM with Imagick.
Tightened up the Inline Link feature
Support <hr> editor shortcut with 3 or more dashes (---); no spaces. To give more time to study the best shortcuts for users, text patterns for bold and italic have been removed and won’t ship with for 4.5
Fixes for SSL with Responsive Images. Please test with SSL, especially on sites with mixed http/https setups.
Allow rewrite rules to work in nested WordPress installations .