Interesting!
I'm in your same predicament although I ordered my new MBP 15 the day before the rumors started (expecting to receive it tomorrow). The computer will still be more than sufficient for my purposes but if the anti-glare will get cheaper or if USB 3.0 or SSD are introduced soon, I obviously will be rather annoyed. :s
It's a tough one isn't it?! If there was no update rumoured then I would be perfectly happy with the currently available model, but I would feel a bit cheated if I bought today and then in two weeks an update arrived for the same money with better specs.
I really need (at least I'm inconvenienced without) a new laptop, since my last one broke a few weeks ago.