Well it isn't impossible but highly unlikely. Nintendo would have to have been lying about having a development team ready. Of course Nintendo has with held information before and Nintendo could have had a smaller team working on Smash Bros for a while and wanted to keep it secret.
But this screenshot looks fake to me. I haven't read any confirmation of legitimacy.Fact is while DK is believable Smash Bros is nearly impossible unless Nintendo lied threw their teeth.
I am guessing Smash Bros will launch in 2013 winter after Nintendo puts a massive team behind it.
-JC7
"In God We Trust - In Games We Play " - Joel Reimer







