Date: Friday, June 23 @ 15:54:47 UTC Topic: Xbox 360
Right from the official Saintsrow.com website they have announced the demo will be available August 1st on Marketplace and on Official Xbox Magazine.....
"Gamers will be able to get their hands on a single player demo from Saints Row at the beginning of August. The demo is slated to release through Xbox Live Marketplace on August 1st and it will also be available on the Official Xbox Magazine Cover DVD"
Note: Even tho its officially announced for August 1st this doesn't mean Microsoft will release it on this date. "Like the Prey Demo June 22nd official date" (Read sjohn's "Prey Demo Delayed for 360" News article for details)