Currently we know that US Army GCV in basic configuration will be 40-50 tons heavy vehicle with capability to use addon armor if needed... weight can easy go up to 55 tons, or even more, so tracks are only option... not to mention that some circles behind GCV program, want's to expand it in to bigger program to develop whole family of vehicles... or even family's of vehicles.
But I doubt that Indian Army should get similiar R&D scheme. Wheeled vehicles are not bad, however if IA looks for something armed with 120mm gun or bigger, then wheeled vehicle probably will not be able to handle it... especially something lighter than 35-40 tons... but maybe? XM1202 MCS from MGV subprogram of FCS program, was belived to weight approx 20 tons, of course it was tracked but still big pile of money was spend on developing low recoil, lightweight 120mm smoothbore gun, the XM360/L48 (after standarisation it would be M360/L48), thanks god that they do not waste that effort and use XM360 as a base for lightweight but designed for MBT's, 120mm smoothbore gun that can fire all range of ammunition used by MBT's (although even XM360 could fire M829A3 for example). This new gun was designdated XM360E1/L48 (after standarisation it would become M360A1/L48), it is proposed as a replacement for M256/L44.
So everything is possible. The Anders UCP in it's light tank/fire support vehicle is using another lightweight low recoil gun, the RUAG CTG L50, maybe it is possible to mount it also on wheeled vehicle.
Italians were experimenting on rearming their Centauro B1 from low recoil 105mm in to low recoil 120mm.
AFAIK also Germans developed low recoil compact 120mm gun.
And there is solution from Russia, the 125mm gun used on 2S25 Sprut-SD, but I doubt that wheeled vehicle could handle that gun.
Just my two cents.
