Yes, but Siri wont, 3D maps wont. If the main features of the update don't make it to the device, what's your point?
edit: the -> your (I know the point of updating the 3GS, I don't understand the OPs point in its attempt to mock Android)
edit: the -> your (I know the point of updating the 3GS, I don't understand the OPs point in its attempt to mock Android)
I don't see the OPs point as 3GSs getting the update aren't better off than Android devices on 2.3 which still have access to many backported Android APIs.
Some features are missing from the compatibility library, but have been made up by open source projects such as ActionBar Sherlock (which is great by the way if anyone hasn't tried it out yet).