The new bomber which is expected in 2018 is expected to be an interim solution until the 2035 timeframe when something will be needed to replace the B-2s, remaining B-1s, and finally the B-52s. The USAF needs something that can hit time sensitive targets that are far away from any base. So far the FB-22 and B-1R appear to be contenders. The FB-22 appears to have the stealth but lacks the range. The B-1R is a modification of the B-1 that would sacrifice range for incrased speed (would also probably have to be stealthy). If those are the only two options, then I prefer the B-1R. It is much easier to take a bomber and refine it then to turn a fighter into a bomber which results in a strike fighter. Which although tend to perform well in their combat role, they are not bombers. Either way this will be an interim bomber what will be really amazing to see will be what comes out as replacment for the B-2 in the 2030s. (Hypersonics maybe