Go to sleep on August 20, wake up to a downloaded demo on August 21 - if your PS3's settings are correct.
A 60-minute demo of Counter-Strike: Global Offensive will be released for PlayStation Plus members in North America on August 21.
Plus members who have set their Automatic Download settings to 'ON' and have checked "Download recommended games and videos" in the settings will be able to wake up on August 21 to an exclusive 60-minute demo.
If you like what you play you'll be able to purchase the full game on the same day.
The Counter-Strike: Global Offensive PS Plus demo has currently only been confirmed for the US.