Details about the U.S. Air Force's new, secret B-21 Raider stealth bomber have so far been limited, but some have emerged since the service announced that it had picked Northrop Grumman to build it 2015. However, since then, there has only been a single piece of official concept art of the aircraft – that is until now.
B-21 procurement math: USAF has $22.6 billion in FY21-25 spending plan for B-21. We know $12.3B is programmed for RDT&E. So that leaves $10.3B for procurement. Last year, USAF said FY20-24 plan had $5.9B for B-21 procurement. Result: FY21-25 plan adds $4.4B for B-21 procurement.