Su-27KRT and Su-27KPP

Few years ago some reports states that Sukhoi company was working on new carrier based special purpose aircraft the Su-27KRT and Su-27KPP; all of them based on Su-27K/KUB. Su-27KRT was a recce/target acquisition aircraft and Su-27KPP was EW aircraft (may be similar to F/A-18G). I wonder if there are advancement on these projects or if there are flying prototypes.

And few months ago Jane Defence Publishing reported that there is a plan for Su-33UB to upgrade Su-35 level (Irbis Radar, new EW system etc.) and there is a plan for AEW system based on Su-33UB with spin mounted phased array radar.
Any progress about these projects?