Darksiders 2 was initially due to release on Xbox 360 and Playstation 3 June 26th 2012. THQ are now having doubts about making their release date though.
“We haven’t announced anything… but the team is working really, really hard. We’re not going to ship it before it’s done.” - THQ EVP Danny Bilson
This could of course just be because the game needs more polishing and will not be capable of reaching its target in time, but some are already beginning to speculate that this could be a delay could be related to the Wii-U