Preordering from PSN doesn't give you beta access so the client will only work on the 24th. However, when beta applications open on the 17th, you can apply and they should give you a code to redeem on PSN. Just redeem the code, and start downloading the beta client(to be safe). Then open your preorder client and see if you get to the login screen. If you're in, you can go ahead and cancel the beta client download. That's what I did this morning and I'm patching right now.