Streamlined Updates
Don’t lose your place: stay on the same page while you update, install, and delete your plugins and themes.
Native Fonts
The WordPress dashboard now takes advantage of the fonts you already have, making it load faster and letting you feel more at home on whatever device you use.
Editor Improvements
Inline Link Checker
Ever accidentally made a link to https://wordpress.org/example.org? Now WordPress automatically checks to make sure you didn’t.
Content Recovery
As you type, WordPress saves your content to the browser. Recovering saved content is even easier with WordPress 4.6.
Under The Hood
Resource Hints
Resource hints help browsers decide which resources to fetch and preprocess. WordPress 4.6 adds them automatically for your styles and scripts making your site even faster.
Robust Requests
The HTTP API now leverages the Requests library, improving HTTP standard support and adding case-insensitive headers, parallel HTTP requests, and support for Internationalized Domain Names.
WP_Term_Query and WP_Post_Type
A new WP_Term_Query class adds flexibility to query term information while a new WP_Post_Type object makes interacting with post types more predictable.
Meta Registration API
The Meta Registration API has been expanded to support types, descriptions, and REST API visibility.
Translations On Demand
WordPress will install and use the newest language packs for your plugins and themes as soon as they’re available from WordPress.org’s community of translators.
JavaScript Library Updates
Masonry 3.3.2, imagesLoaded 3.2.0, MediaElement.js 2.22.0, TinyMCE 4.4.1, and Backbone.js 1.3.3 are bundled.
Customizer APIs for Setting Validation and Notifications
Settings now have an API for enforcing validation constraints. Likewise, customizer controls now support notifications, which are used to display validation errors instead of failing silently.
Multisite, now faster than ever
Cached and comprehensive site queries improve your network admin experience. The addition of WP_Site_Query and WP_Network_Query help craft advanced queries with less effort.
