Best picture to date:

And a look at the makings of:

https://time.com/6238168/b-21-raider-bomber-us-military-exclusive/

From the Time article, one of the less sexy but most important aspects of the B21 is that its designed to be much lower maintenance than the B2 due to improvements in the design as well as more modern RAM coatings.

Meanwhile, despite the B21s ascension, the B52 shall remain eternal. Perhaps the 2nd longest running weapon system of the US after the M2 Browning .50