This is not a development, as Russia, or more exactly the USSR, is the only nation to have fielded a combat fighter in squadron service with a phased array radar, the MiG-31 Foxhound.

It appears that much of this development is being driven by the Indian medium fighter competition.

The installation appears to be a bit tight (top pic) in the demonstration, though there may be more changes to shrink the “back end” of the radar and increase the aperture size in the production model.

The ground mapping imagery (bottom pic) does appear to indicate a very significant improvement in air to surface capabilities.