With reference to the poster behind Ajai Schukla:-
The new rifle seems to have fully collapsible butt stock (with rubber butt plate and cheek rest?). It has a picatinny rail on top with dual sight system. The iron sights seem to be removable & perhaps to be fixed on picatinny rail. There seems to be option for mounting a forehandle on lower recevier, so there should be picatinny rail on lower receiver also. Seems to have options to fit multiple barrel lengths (quick change?). The upper receiver seems to be detachable for quick change. The forend looks like G36, so does it have plastic body? There seem to be details about a new 5.56mm round which are not clear. Even the grenade launcher seems a new design as it has a handle.
I hope these pics are not just diagrammatic representations from some other compay, cut and pasted. Interesting a very dim picture next to FINSAS soldier seems like a bullpub rifle.
Multicaliber normally means that by changing the upper receiver, one change the caliber. In this way 5.56mmx45, 5.56mmmx30, 6.8-6.5-6 or even 9 mm can be adopted with the same lower receiver. For the 7.62mm round, one would new rifle as the changes would be too many.
My guess would be it is mixture of G36 looks, INSAS mechanism and collapsible stock like HK416 sub carbine