It has been rumoured for nearly a month, that Microsoft are in the process of striking up an exclusivity deal with Namco over the game....it then went all quiet and then a few days ago it was reported (although not confirmed), that the PS3 version wa dropped due to porting issues and stalled sales.
The rumours are that Microsoft will reveal all at E3 next week...trying to get one over Sony again.
Surely Katamari is a bigger seller in the Eastern Market than the Western...so why oh why would Namco release the game on the 360 and not the PS3.
Anyway, this stinks of loads of money and we will probably find out that Microsoft have a deal with Namco over the game, but who knows how much dosh Namco will receive for doing this.
It's a shame considering all the Katamari games have come out on the Playstation platform.
Prediction (June 12th 2017)
Permanent pricedrop for both PS4 Slim and PS4 Pro in October.
PS4 Slim $249 (October 2017)
PS4 Pro $349 (October 2017)