Updated TinyMCE, the software powering the visual editor, to the latest version. Be on the lookout for cleaner markup. Also try the new paste handling — if you paste in a block of text from Microsoft Word, for example, it will no longer come out terrible. (The “Paste from Word” button you probably never noticed has been removed.)
We’ve added widget management to live previews (the customizer). Please test editing, adding, and rearranging widgets! We’ve also added the ability to upload, crop, and manage header images, without needing to leave the preview.
We brought 3.8′s beautiful new theme browsing experience to the theme installer.
Galleries now receive a live preview in the editor. Upload some photos and insert a gallery to see this in action.
You can now drag-and-drop images directly onto the editor to upload them. It can be a bit finicky, so try it and help us work out the kinks.
Some things got improved around editing images. It’s a lot easier to make changes to an image after you insert it into a post and you no longer get kicked to a new window when you need to crop or rotate an image.
New audio/video playlists. Upload a few audio or video files to test these.