It probably will be a stealth aircraft , since making a non stealth 1 would proove to be ineffective and useless only to replace the Backfire's , the Stealth 1 on the other hand would offer a big advantage , imagine stealth bombers armed with Meteorit M , that would be amazing.
Looking at the drawing with it's V-G wings, it seems to be a not very significant advance from the Tu-160. I would also question the LO characteristics of the design, since as far as LO to radar is largely (~90%) has to due with the shaping of the aircraft. If one were to look at the airframes of the F-22, the F-35 or the not-selected F-23 or F-32, one would see wings, tailfins, etc. all with similar angles so that the lines run in parallel. That is not the case on the drawing, which means radar signals would have more area to reflect off of than a different design where lines did run in parallel. Also, utilization of a V-G design suggests two things.
1. The aircraft could have significant maintenance/through-life costs.
2. Russian aviation industry hasn't developed fixed wing designs capable of meeting the required aerodynamc envelope.
It must be said though that very little seems to actually by available on the PAK-DA, so this drawing might not be at all representative of what the actual aircraft will look like. In some respects, I would consider this more likely, since the drawing itself is reminiscent more of mid-Cold War era bomber design.
-Cheers
