Journey looks like one of 2011's most interesting—not to mention most beautiful—games, indie downloadable title or not. It was playable for a very privileged few at E3, but over the next week will be playable by a slightly less privileged few.
Sony will be running a closed beta for the exploration game, beginning today, June 28, and running until July 12. You can't sign up or ask nicely for a code; instead, they're being sent out to any PlayStation Plus subscribers who were also the "earliest adopters of Flower" (the developer's last PSN game) and via code giveaways on places like the game's official Facebook page.
Those who bought Flower early, if you're invited it'll turn up in your XMB notifications. So get checking!