It looks like Verizon's about to double up on double data. According to the Los Angeles Times, Big Red is about to reintroduce the double data promotion that first rolled out in November, and came to a close at year's end. Under the offer, customers signing up for a 4G plan will receive double the amount of monthly data (at no extra charge) for the duration of their contracts, as long as they sign up for two-year deals. Unfortunately, though, the promotion only applies to first time 4G subscribers (or those looking to upgrade from a non-4G plan), and is restricted to smartphones, leaving tablet owners in the dark. As with its original campaign, the redux will only be available for a limited time, though Verizon has yet to announce a closing date. It all kicks off this Friday, when, not coincidentally, the carrier will officially welcome the Droid 4 to the fold, as well.