The two most obvious changes are the new login screen, and support for spellcheck in the Visual and Markdown editors! I'll be highlighting some of the other new features over the next few days, but feel free to look around and discover them yourself!
New Login Screen
The login screen has a facelift and now supports two-factor authentication!
Additionally, new users will be redirected to a special welcome page so they know what's going on while the admins verify their account.
Spellcheck
Spellcheck is now available in the Visual editor as well as the Markdown editor!
In the visual editor, spellcheck works continuously to highlight mistakes:
In the markdown editor, click the A-checkmark button on the right and spellcheck will check your work! Misspelled words will be highlighted in the preview pane on the right: