Guido's keynote slides from PyCon 2013: https://www.dropbox.com/s/xknbe58zcvjhzhv/PyCon2013.pptx
HN comments: https://news.ycombinator.com/item?id=5395385
IMO, it's about fracking time asyncore got replaced with something half-decent; I've been writing I/O event loops inside threads for way too long (I probably should have been using Tornado or eventlet, but still...). The API looks kinda eclectic (which I guess it would have to be, if it is to work with the multitude of existing solutions), but I'm sure they'll tighten it by the time they release. This is definitely a Good Thing. For me, this is the first real incentive to switch to Python 3.