Do people regret buying the iPod 5.5? Not hardly. Apple went ahead and ruined a good thing with the Classic. When an item does something, and does it well, that can never be taken away. I have audio equipment from years ago that I could only replace for triple the money.
Also you could, when that time comes, sell the old an put the money towards the new.
There are always new tech and hence better products. To be able to use the new tech/product first mean to be able to enjoy higher SQ first. Even though the 802 or something equivalent will come out later doesn't means the 801 is not worth to buy.