I think most people feel that a "top of the line" current generation phone must at a minimum have a larger screen (4.3" or bigger) and "4G" whether it be HSPA+ or LTE or what have you.
Larger screen? No thanks, it's big enough already; I'd rather not be holding a tablet to my ear.
And is 4G actually rolled out anywhere? 3G finally seems to be fully deployed in the UK; I cannot see networks over here splashing out on network upgrades in the near future.