Xbox Live's Major Nelson has revealed the XBLA Summer of Arcade lineup for this year, and upon closer inspection, it reveals that Supergiant's Bastion will be released on July 20th for 1200 points ($15) and that Certain Affinity's Crimson Alliance will be made available on September 7th for 1200 points, as well. And for a look at both titles' new box artwork, you'll want to hit up our profile pages here and here.