I think jQuery is amazing, but one thing that I've found over the years is that the real killer for it was CSS animations becoming simpler to use and more widespread in terms of support.

The final thing I used to reach for jQuery for was animation support, but that need is by and large gone now. AJAX/JSONP is good there, but to be honest it's not something that needs a wrapper these days.

Glad to see the library is still updated, though - for sites that might not have a budget to upgrade, knowing it's still got support must be nice.