They haven't even announced the price. If priced right, it could give the iPad a run for its money. If priced wrong, it'll be the Zune of tablets.
If it is priced well, I hope Apple has something really special up their sleeve for the iPad 4. Problem is this is full Windows. What we need is a full Photoshop for iOS. Not just another "touch" version. Real full PhotoShop.
The reason the iPad and iOS have succeeded so well is because they don't have "full desktop apps". It's precisely because of the touch optimised and completely rethought applications that iOS has been a resounding success.
You can't just keep forcing the same old tired UI into different form factors and interaction/input methods. That's why Microsoft is making Windows 8 and doing the whole Metro thing.
They're starting to "get it". They just need the vast majority of their user base to understand now. Sadly, that's going to be the hardest sell.