They'll drop XP once they release 7, they only support two versions at a time.
However, it's not surprising that it's "underwhelming" ... they are competing against more innovative OSes now. Apple has been making great strides since they over charge, allowing them to put more money into development, and by making it Linux supportive they are increasing their edge (essentially it will be Linux for dummies). Then against Ubuntu there is almost no competition, as WINE evolves to capture all of Windoze games and most developers are migrating to Linux/Gnome (the core of Ubuntu) and adding their Deb packages to the repositories Windoze is starting to lag. Then you have security issues, and Windoze hasn't even come close to Linux/Unix, not even by a long shot. Windoze 7 is just a scramble for position and nothing more at this stage. They would have been wiser to follow Apples example and go GPL, instead of selling the OS, sell the support, which is the only reason Apple can stand up to Linux now.
Apple over charges? According to whom? Maybe if Microsoft would charge more, they could do their own work rather than copy everything Apple does 3 years later. How much should Apple charge for their OS for you to think they aren't over charging? Are you challenging their prices for hardware? Really? Again, are you comparing similarly outfitted machine of the same quality? I doubt it.
Nobody is forced to buy an Apple product but you do get what you pay for. Every Microsoft powered box I have ever used sucked because of the awful operating system........ the hardware can only be as good as the OS that runs it. I have to use that simplistic shit by Microsoft at work, it's awful, but it was cheap......
Most people aren't computer geeks, they just want a machine that works every time they switch it on. My G4 has worked for me, flawlessly, for many years. It will now handle my printing while my new 24" iMac will become my main computer. I don't care about playing games, I work with Photoshop and Illustrator to produce graphics, illustrations and retouch photographs......... my iMac with a second 20" screen will be a perfect machine for me ready to do anything right out of the box, that's what I payed for. I will not need a consultant, an IT rep, or anyone else....... it will just work and make me smile every time I power it up....... how much is that worth?