The 2015 version of the WWE 2K games that was slated to release on October 28th of this year has been officially delayed.. since it has to keep along a timeline the delay isn't too long and it will only affect the current generation systems; PS4/X-Box One.. The new release date after the delay is November 18th, which is a 3 week delay..
"The additional development time enables our talented teams to ensure the WWE 2K15 next-gen experience fully meets our expectations," Greg Thomas, the president of 2K Sports in-house developer Visual Concepts, said in the statement. This is the series' debut on PS4 and Xbox One.
2K Sports has not given any specific reasoning/details behind the delay other than what Thomas had stated (above this statement).. Given that the delay is only 3 weeks I would imagine there wasn't really that many HUGE issues, probably just a couple of kinks that needed to be worked out.