No reasons for the delays have been announced.
Two PS4 exclusives that were due to hit the market in the next few months have apparently had their release dates pushed back. Both Shadow of the Beast and Alienation have had their ship dates changed in the PlayStation store, though Sony has not made an official announcement for either game. Shadow of the Beast now shows a release date of March 2, 2016 while Alienation now has a ship date of March 23, 2016.
It seems that Shadow of the Beast has been pushed back five weeks, since it was originally supposed to be launching at the end of this month. Alienation has now had its release date pushed back about three weeks from when we expected it to go live. Since Sony has not yet talked about the delays, we’re not sure exactly why the changes were made. Considering the releases weren’t pushed back all that far, it’s likely the developers just feel as though they need to have a few more weeks to iron out some details.
If you want to learn all there is to know about these games while you know wait a bit longer to play them, you can check out the wiki for Shadow of the Beast here and the wiki for Alienation here. With the new dates, Shadow of the Beast is now due out March 2 while Alienation will not be hitting your PS4 until March 23, 2016.