I could be wrong but citing my memory when Apple actually states a month or season for releasing something specific, they tend to drag it out to the last second.
I am beginning to think Lion will be the same way. I would imagine they want as many approved Lion apps as possible in the MAS on launch day.
My 11.6" is the perfect size for being able to use a computer and travel. I stopped complaining about this when it came out. The aspect ratio of the screen mixed with light weight is awesome. I always wish for more battery life but I can't complain about 6 hours in that form factor.