Polytron's Fez (screenshot above) will be free on PlayStation 4 along with Road Not Taken, the upcoming puzzle roguelike from Spry Fox. PlayStation 3 owners will be able to pick up Crysis 3 from Crytek and Proteus from David Kanaga, Ed Key and porting house Curve Studios. Vanillaware's Dragon's Crown and Digital Dreams' Metrico will be the two free titles on PlayStation Vita.
Sony, in accordance with its recently overhauled strategy for its PlayStation Plus release schedule, will make all six aforementioned games free on the first Tuesday of the month, Aug. 5. That happens to be the release date for two of the titles in question, Metrico and Road Not Taken. At that time, all six of July's free games will return to their original prices.
Three of August's free titles, Proteus and Fez, will support Sony's cross-buy program during the month — Proteus and Dragon's Crown across PS3 and PS Vita, and Fez across all three Sony platforms. That means that anyone who picks up those games as free PlayStation Plus titles will also be able to play them on the other systems.
Update: Dragon's Crown is not usually a cross-buy title, but according to a comment on the PlayStation Blog from Kristine Steimer, senior community specialist at Sony, PlayStation Plus subscribers will receive the PS3 version of the action role-playing game if they pick up the PS Vita version free in August. We've edited the story above to reflect this.