I'm not saying that Haswell isn't going to be good or important, just don't believe marketing fluff from intel or any other company for that matter. Usually moving to a smaller manufacturing process does increase battery life but not so significantly, I still think haswell will only give you like 2 extra hours of battery. I could be very wrong about this but I think2 hours sounds about right.
In reguards to the atoms, the new bay trail processors won't be out until very late (December-ish) 2013 or early 2014 and about the regretting comment(which is funny imho), no matter what you buy, when you buy it, something newer, better, faster, stronger will always come out too soon and personally, I will always want it. The current clover trails I'm pleased with. Yes the graphics processor does suck and intel needs to improve it but for 720p video at least on the machine its fine. I haven't plugged mine into hdmi to test out 1080p yet though. Overall I'm content with my atom tablet, it does everything I need it to well for a tablet/dockable tablet hybrid.
to Bawboh86:
The thinkpad tablet 2 is a MUST BUY if you need an active digitizer. Otherwise, since you sound like you need something for lighter use I would buy the acer iconia w510 for its size, build quality, and value. I wish now that I would have bought the thinkpad tablet 2 after reading reviews that it got a 10 hour battery life, because the keyboard is probably a little better than my hp envy x2 and I like the size better. Otherwise, I'm still very happy with my HP.
The asus vivotab smart wouldn't be bad either and it seems like a better value than the acer w510 but I won't buy ASUS again because their support is awful. I mean seriously, awful.
Most of the intel atom bugs seem to be worked out now thankfully, it was a little bit of a rocky start. All-in-all, the atom is a great processor for your needs and you'll be happy with it. I would be weary about running gimp on it though. I know gimp isn't super resource heavy but It might be laggy with an atom. I would ask around first.