AT&T makes Next plans easier to get, still not as a good a value as they should be

AT&T is making their Next plans, which can allow for more frequent phone upgrades, available to some existing customers already on regular contracts. AT&T:

AT&T customers on a two-year agreement as of January 18, 2014 are eligible to upgrade to AT&T Next six months into their contract. To check their eligibility, customers can dial *NEW# and begin to take advantage of this early upgrade opportunity in AT&T retail stores, and online at www.att.com.

Unless I'm missing something, it's still not as good of a deal as it should be. Essentially, it's phone leasing on top of a subsidy, which smacks of double-dipping. Anyone run the numbers and found them in their favor?