Alright, I'm about to go dark again until E3, but before I go I thought I'd make some predictions that can be mocked for their inaccuracy after E3:
More detailed specs will leak shortly before E3. They'll comprise of the following:
CPU: 3-core, 3MB eDRAM cache, 2-way SMT, OoO, running at 3.2Ghz (pretty much known already)
GPU: 640:32:16 core config, running at 600 to 800MHz, with some sort of fixed function lighting hardware that most 3rd parties will barely use. The GPU eDRAM will be increased to 40MB to support the second controller.
RAM: 1.5GB of GDDR3 on a 192-bit bus at 900MHz.
Nintendo fans expecting teraflop+ performance will try to mask their disappointment, and Sony and Microsoft fans will troll like they've never trolled before.
Nintendo will confirm that the console will work with two touch-screen controllers, and will detail the Nintendo Network, which will have almost all the features of XBox Live and the big advantage of being free, but will for years still be considered inferior by people who haven't used it. There'll also be some new, unannounced hardware feature (bigger than the Wiimote speaker, but not as big as a haptic feedback screen).
Nintendo will show the following 1st/2nd party games at E3 (* means playable):
Pikmin 3*
3D Mario
Wii U Sports*
Wii U Fit*
Wii U Play* (bundled with extra controller)
Retro FPS* (not Metroid)
Monolith RPG
Mario Kart
2D Yoshi game
Lego City Stories*
Surprise 3rd party exclusive*
New Nintendo IP*
New Nintendo IP
There will also be a handful of mini-games playable (like Chase Mii) which will be bundled with the system.
Once Nintendo actually shows off Mario, Pikmin 3 and Retro and Monolith's projects, anyone who actually cares about games will completely forget about the specs, as these games'll look god-damn beautiful. Some Sony and Microsoft fans will continue to troll, but will later end up crying themselves to sleep when they realise that the PS4 and XBox720 won't come anywhere near their feverish 16-core spec-dreams.
Plenty of 3rd party multi-plats will be shown off on Wii U, including AC3, Black Ops 2, GTAV, Medal of Honor, etc., and will all look almost identical to their PS360 counterparts, with cursory touchscreen use. (AC3 might be the exception there, both in graphical and controller terms) Resident Evil 6: Wii U Edition will be announced, released a couple of months after the others and with an inventory on the touchscreen but little else changed.
A handful of third-party games will actually try to make use of the hardware, including AC3, but also Aliens:Colonial Marines and Metro:Last Light (which will actually look surprisingly good on the system, if THQ's financial troubles haven't caused it to be cancelled by then). Killer Freaks will continue to be somewhat intriguing, but not a system seller. There'll be a couple of other below-the-radar third party exclusives revealed as well, mostly targeted at casual gamers.
See you guys closer to E3!