The 5 cubesats onboard ISS have been released as expected on October 4th after the delayed related to ATV-3 undocking. On this picture you can see 3 of them including F-1 just after they left the Kibo module being pulled away from the airlock by the japanese robotic arm.
The japanese space agencies have confirmed the vietnamese cubesat F-1 and its companions will be deployed on September 27th 2012. This will be the first deployment of 5 cubesats from Kibo module and it will serve as a test to further simple and inexpensive launches from the ISS via the japanese HTV cargo. F-1 lifetime in space before re-entry is forecasted to be 250 days. Good luck!