The folks at Apple brought the big screen touch phone to the market, but the other mobile manufactures won't have much of an answer until later this year. See Mobile's Barcelona Hangover.
That's going to present a problem for the number of cell phones predicted to be sold this year. The article states that analysts expect 57%-59% of handset sales to be for replacement/upgrade purposes because the market for new subscribers worldwide is tapped out.
So the big question is whether upgraders are going to sit out the year until phones with the new post-QVGA phones appear in the marketplace or rely on aging platforms such as the N-95 from the Nokia.
My prediction is if you need a phone you need a phone now. However if your phone is extension of "You" the brand.