To be honest, I’ve always read the projected release date of “summer” as “October at the earliest”. I’ll be pleasantly surprised if EE2 ships earlier, but if it’s fall or winter it’s no big deal to me.
EL doesn’t have a history of releasing on a public schedule and I don’t know what internal deadlines there have been—other than EE 1.6.0 and MSM if I remember correctly, which was pushed out the door in time for SXSW 2007. I also recall that EE 1.6.0 had a flurry of build updates, seemingly more so than any other release. What I’m trying to say here in a rather clumsy way is that while I’m fully prepared to be an early adopter and take my chances, I’d rather if EE2 misses a self-imposed deadline or two and ships as solidly as possible than have it ship on time and be a mess.