Whoops. Sony accidentally featured the as-yet unannounced Battlefield Premium service in their latest European PlayStation Store roundup, costing £39.99. They've since removed it, and even appear to be aggressively pruning any rogue comments that reference the initiative, but the damage is done.
Battlefield Premium is heavily rumoured to include 20 maps and weapons for the price, and this ties in nicely with the leaked info from two days ago. Content will likely be doled out in larger expansions over the coming months, potentially including a fifth content pack called 'Aftermath.'
We expect EA to formally announce Battlefield Premium during their EA press conference, but they might consider pushing out a confirmation soon to plug this increasingly embarrassing leak. The service is set to launch alongside the Close Combat expansion on June 4th, which you can read more about here.