How long does it usually take for things to go from trunk to release? This will be awesome when it's ready because I can keep my production stack really simple. All the existing solution for proxying sockets seemed way too complex, and I typically just run them on different IPs, but even that's annoying.
Nginx's development branch is generally considered production ready [1]. I trust the nginx core team not to introduce potentially problematic changes. As an example, the recent spdy integration [2] has lived in a parallel branch for over half a year.
The dev branch is officially upgraded to stable infrequently, maybe once a year.