Currently the plan is to release onto PC, Mac, and Linux along side one console. Since we are a micro-sized indie team (only a single programmer) and money is tight, it is important for us to get to release sooner than later so we can survive. :)
The reason the console is still undecided is so that we can continue speaking to the major (and not so major) console representatives to try and find extra support for Bloom as we get continue development. Hopefully this lets us get more resources during development to make an even better game, since this is a pretty ambitious project and every bit counts.
Right after the main release, we will then continue working on coming to more consoles (aiming for things like WII-U with some unique features added for their controller, or even onto Playstation Vita or Ouya, since the entire game is actually 2D and can run pretty well on even less robust systems).
Making sure the game runs as well as it can on a platform is our first priority when coming to a console, and really this takes time for us to do right. If we are able to get more resources (for example, if the kickstarter goes really well), we will be able to hire some extra help for James (our only programmer!) and he will be able to get us running on additional consoles for day 1.
We are also looking at support for higher end tablets, provided we can give the same experience on that platform. Though, this won't affect the design choices and primary focus of providing the best game possible for PC gamers.