Board Thread:General Discussion/@comment-4451749-20140111172408/@comment-32390199-20140529004244

^ To add, if there is DLC planned for the game then it is possible for Bowser Jr. to get in but don't expect him on-disc. I know it is said that there isn't any DLC planned atm. But be honest, they already know whether they will have DLC or not, they just don't want to reveal it yet.

If they actually announce DLC I expect/hope Bowser Jr., Impa and Mewtwo to be in.