I think they'll be a 4GB cheap option...maybe...for the 360, as well as more conventional options (40GB, 80GB etc.)
As for WiiU...it'll have 2, 8 and 16GB Flash-Memory with options to expand via SD cards IMO. No onboard memory is suicidal, especially considering the controversy regarding the Vita...
Heck, the 3DS has onboard memory, AND shipped with a 2GB SD card.







