Nintendo recently released a video showing off the improvements the April firmware update will provide in regards to loading times. Overall they managed to reduce loading issues by another 15 seconds for going from a game to the system's menu.
Nintendo is also planning for Miiverse to be released on mobile devices and the PC by next month.
http://www.destructoid.com/gdc-ninte...l-249840.phtml
Finally at GDC, Nintendo outlined a lot of the steps they are doing to help bring in more indie support for the Wii U while also removing a lot of the restrictions Wiiware was towards indie developers.
The new toolkits were designed to allow porting to be a lot easier for the Wii U and now are given away for free as long those developers commit to making games for the services (not just ports). Nintendo is also giving developers almost total control with the service in regards to release dates, pricing, and approval processes.
http://www.destructoid.com/gdc-ninte...t-249898.phtml