Update to Press This
You can find this under the Tools menu, it has been in WordPress since 2.6. It hasn’t received much love for a while, with the update sharing has never been easier. Just add the Press This to your bookmarks for quick access. Note that the update could cause it to clash with some security add-ons in Firefox.
New characters supported
These include native Chinese, Japanese and Korean characters. You can also play around with the new emoji in WordPress.
Switch themes right in Customizer
See how your website will look with a new theme, before publishing it live to your site.
Embed Tumblr and Kickstarter
Just copy the links straight into your post to see the embedded content.
Update to updates
Updates have been smoothed and streamlined to save you time.
That’s it for WordPress 4.2! You can read more about the update on the official WordPress.org news