Thanks for your interest in the game. The physical release from Premium Edition will be coming out first but a digital version will be available later. Still not sure if the full digital version will be available on Itch.
I see. Not a lot of people (speaking for myself) are physical collectors. But hey if you do digital by all means I'll throw money your way to send support to make more games like this, so maybe, you can be the next Shovel Knight dev. Your call on that, but I'll be happy to send "support" your way. (Just saw an email from Prim Ed games so cross google'd to get here.)