Blacklist/Highlight words and phrases
Recent chat history on chat load
Custom chat emoticons
Resizeable chat on the channel page
Show or completely remove deleted messages
Improved emote menu
Unban all users with /massunban
Username color recalculation (prevents hard-to-read colors like Spring Green)
Chat image link previews on hover
Prioritizes chat, and auto-updates channel statistics
A slick, grey theme which will make you love Twitch even more
On-site and desktop notifications when people send you messages, mention you in chat, and when channels you follow go live
You may notice that extension versions are not the version listed above.
Do not panic!
The browser extensions are always behind what the released version is. BetterTTV is loaded from a content distribution network anytime Twitch is loaded in your browser, so you always have the latest version. You can check the BetterTTV Settings' "About" tab to verify your version.