Cuphead will always be an Xbox console exclusive.

Cuphead is one of the most anticipated indie titles this year by the developers StudioMDHR. A Developer behind Cuphead by the name “Teeth” on NeoGAF has confirmed their title will remain an Xbox One and PC exclusive. Here’s what he said:
“Yes, this Cuphead game is exclusive to Xbox and PC (with Steam and Win10 versions at launch and a GoG release likely shortly after) “There will likely be a Mac version down the road and possibly a Linux version beyond that (unless we lose our houses or whatever).

In a similar Cuphead news, StudioMDHR founders quit their jobs, remortgaged houses to work on Cuphead and they also revealed this project was originally worked by three people on weekends. In an interview with GamesRadar,  studio founders initially began the project as a hobby but later on dedicated their full time after impressing many fans when Cuphead was revealed.
Chad Moldenhauer[StudioMDHR Founder] said – “The truth is that we started Cuphead as a three-person team, just working on the weekend (…) “With such a small team, we knew to keep our scope small – there were just a few bosses and a couple of weapons and everything was just less insane. We demoed Cuphead at E3 2015 and the response was mind-blowing.” He further says “We realized that there were a lot of people out there that wanted what we were doing. My brother and I quit our jobs, remortgaged our houses and began expanding the team.  This was our chance to actually deliver the game we wanted to make all along, rather than the cut-scope game we originally planned with a three person team.”