Nice boost.
I'm disappointed that the rumoured dedicated SSD drive for the OS didn't come this time. That was my biggest wish.
And I really wish they would promote and leverage Xgrid more. With households, schools and businesses have increased Macs connected to their local networks, Xgrid could be a huge benefit for anyone doing processor-intensive tasks. Has such potential and a big differentiator to the Windows side of things.
Windows has TRIM. Apple hasn't. Don't waste your money.