I don't see tanks going out of favour anytime soon. Yes they can be more vulnerable than before but the reality is it is still a important tool. Ultimately it is Arty which wins battles.
With modern technology the battlefield is terrifying (more so than the past). Drones that can kill you without even knowing they are there, the ability to track people based off their cellphone (and since its a addiction all it takes is one guy in the platoon to smuggle one to know where you all are), the ability to dismantle or listen into the communications grid, guided munitions which will adjust their aim in flight to hit you, etc. I am personally afraid to see what they shall come up with next.