I was actually kind of dreading the event yesterday. I traditionally have been bitten by the "latest and greatest" geek bug, where even if I didn't need something because what I had at the time suited my needs, I'd still lust after whatever new Apple product came down the pike. Example: I've been waiting for my 5th Gen iPod to break down or something so I can have an excuse to get an iPod touch (I'd get an iPhone, but Vodafone NZ's plans are absolutely ridiculous).
I got a 17" Penryn MBP the day they came out. I waited for over a year before purchasing one. There were things on my wish list that they left out, like a case redesign and Blu-ray, but I quickly learned to live without them. This computer is amazing in every way, easily the best designed piece of technology I've ever owned.
Then the new ones came out yesterday, and I'm thankful I bought mine when I did. The new MBPs absolutely do not meet my needs; the mandatory glossy screens, the crappy chiclet keyboard, and the disturbing trend of taking options away from their laptops rather than adding new ones (i.e., no more Firewire in the MacBook, only one Firewire port on the MBP, no Blu-Ray because it's a "bag of hurt", no more matte screens) all make me glad I have the "that's so yesterday" model of MBP.
This machine will have to last me at least until my Applecare runs out in March of 2011. Whether I get a replacement MBP at that point or stick with what I have depends entirely on Apple and whether or not they come to their senses and stop promoting form over function in their hardware
I'm not betting that they will.