Is UI ready for a new production app?

Is UI ready for a new production app?


I need to build a new app right now. Some of what's in UI would be
helpful, and it seems wise to use the most recent and standard
technology (rather than third-party plugins), if it's stable.
However, my impression is that issues and fixes are still pretty
frequent, and I have no sense of a final release will happen.
I hate to ask, but is UI stable enough, *now* to build into a
production app? If not, any idea how soon it would get there?
Thanks.