If you have the closed beta client on your PS3. When Open starts on the 17th I'll assume you'll require just an update and then you can play so yes you should be able to play on the 17th.
Hope you are correct on that!
*sigh* I'm still waiting
I just got a code from Twitter Downloaded and ready to go now just gotta wait till the 17th
you better click on it man,,,,,,,,there is a 2 gig update after the 300mb install and the 30 mb activation