Best I can assume while following this closely, is that Toyota will likely have an all new Tundra in 2017/2018 and practically match what Nissan has done.
I think Toyota will offer a diesel engine and add an optional designation of "HD" to higher capacity rated trucks. And it sounds like the engine is practically identical to Nissan's...I have no resource for this. But it sure would be smart to help raise production volume and lower costs.
I see no indication of DRW. Those are pics from a 2007/2008 prototype, just before the project was killed due to the depression.