I'm not sure, but it seems that EA have a lot of caveats in place that are slowly being released to the media/gamers.
I'm beginning to think that it's not going to have a great value at all to be honest.
I'll be honest, I always thought that early access would be limited in some way. EA (or any other firm) would never give unlimited access to a game days before general release. There would be too many spoilers. People would play the games as much as possible for 5 days and then not purchase.
I'm still undecided about the value, I've paid for a full year so they have 12 months to prove it's value. I've said a few time in other threads that the value for me will come from how soon after release a game hits the vault.