Looks like the change in Guild leadership has occured and so I would suggest to wait until RealoFoxtrot (Leader) or when Officers are appointed on the games release and then PM him/them in game then.
I don't think there is any way to actually join before then but you have expressed an interest so Id say you're okay for now. I'm pretty sure that the global wipe Anet are doing prior to release will include any of us that joined in beta
Hope that helps
EvE Online - Meg Deminer
Battlefield Bad Company 2 - Fa7her Ted
Battlefield 3 - xxBinaryxx
Guild Wars 2 - River Quinn