Looks as though Sony's "electrifying announcement" may have been leaked a bit early. A Best Buy pre-order box features this promo for an Uncharted 2 "Multiplayer Beta Voucher," as revealed by Kotaku. From what we can garner from the box, purchasing inFamous will give players an early preview of Uncharted 2's online mode. This would be a rather smart move on Sony's part, leveraging one of its biggest franchises to promote a new IP.
Oh, and multiplayer in Uncharted 2??? That sounds pretty rad, too. Guess we'll find out all the details when embargoes end on Monday.