HTTP/2.0 – Please admit defeat
Well, SPDY might be a "prototype", but it's solving real problems <i>today</i> - I care less if it's perfect or not, if it solves <i>all problems</i> or not, as long as it's easy to implement, has a decent footprint, and offers significant improvements over HTTP/1.1. An imperfect working prototype is better than a perfect blueprint that materializes in distant future where problems and environment can differ greatly.