From NintendoEverything. Article http://nintendoeverything.com/shovel-knight-coming-to-retail/

Shovel Knight coming to retail

New product listings on Best Buy’s website reveals that Shovel Knight is seeing a physical release at retail.

Entries for 3DS, PlayStation 4, and Xbox One versions have been spotted. At the moment, it’s unclear if the Wii U version will be receiving the same treatment.

Based on Best Buy’s listings, Shovel Knight’s physical version will cost $29.99. It’s tentatively slated for September 15.

Source

I guess now we can treat it as an AAA game? ;)

I find it hilarious how Xbox 360 is the only modern platform not receiving this game

- M, Carl

So twice the price of the digital version? That's a bit steep.

And it will still not be available on Wii U in Japan.
Thanks a lot, Nintendo, for this great thing called region lock.

Would have already bought the 3DS version if it was on retail, but my mind is already set on the Vita version now. Nothing can beat the sex appeal of the OLED screen.

I might buy this retail. It's one of the few indie games that have nailed the 8 bit look, it looks authentic unlike 98% of pixel art indie games out there.

If this comes to Wii U, I might actually consider buying it.

Same vita is the perfect format for these games. DAT OLED :o. wonder if it will make it's way physically to Vita. I'll still buy it next week but like Retro City Rampage DX which comes out soon (very limited though i actually pre ordered) its another I'd happily have on a card in a nice box.

Why are you not mentioning the Vita version?