I'd like to also chime in and express my thanks to the developers for this absolutely spectacular release!
Personally, the FAYT tab selection is what's made the most impact on my day-to-day usage of Opus. Previously I was opening lots of Opus windows, because navigating the tabs was too cumbersome. But now, with the new "@" bar option, I can have a dozen tabs open and still navigate to the one I need in milliseconds. So I'm a newly converted tab fanatic, and Ctrl-T is now one of my favorite shortcuts!
Speaking of shortcuts - I don't think anyone on the thread has yet mentioned the excellent new feature which allows filtering the keyboard shortcut list based on the shortcut description. That is, in fact, how I quickly found out about Ctrl-T: using the new filter bar I typed in "tab", and I immediately received a list of shortcuts relevant to tab control, including Ctrl-T for "new tab".
And, of course, SET FONTSIZE and the ctrl-wheel font control is just awesome!
New releases such as this one are such a joy!