superchunk on 29 May 2014
... and no. There will not be a WiiU with built in GC ports. This was made specifically for SSB and likely is all that it means.
However, it is remotely possible that we will see GC on VC soon. But I'd think they'd announce N64 on VC first.
Either way, both will have Pro controller support. So this is not really necessary.
