The system update is coming this week along with Virtual Console, but who knows when.
http://www.nintendoworldreport.com/news/33973
Nintendo of America will reveal the full launch Wii U Virtual Console lineup tomorrow, according to a Facebook post. This is likely what the tease two days ago meant, instead of signifying the launch of the service.
According to Nintendo Force Contributor Emily Rogers on Twitter, the system update and Virtual Console launch will not be happening tomorrow, despite teases and rumors pointing towards a launch for the update or Virtual Console by tomorrow. While rumors of gifting and cross-buying Virtual Console games is running rampant, we still have no official confirmation of that, either.
As of now, we know that Ice Climber (NES) and Super Mario World (SNES) are launch games. It's also logical that the previous 30 cent games, which include Balloon Fight (NES), F-Zero (SNES), and Punch-Out!! (NES), will be a part of the selection as well. Kirby's Adventure (NES) is available for 30 cents on the eShop currently.