By that logic not only tanks... every land vehicle including APCs and IFVs without active protection system will be obsolete.
I personally don't think the age of tanks is over. I think that the tank will slightly change its shape and the newer products will make a bigger emphasis over active protection systems, datalink, electronic warfare, recon, situational awareness systems and interoperability with unmanned platforms.
Tanks will be filled more with sensors and electronics. They will be able to work together with man in the loop autonomous UAVs and modular UGVs with different payloads and tasks including recon, anti-tank and anti-air roles. Emphasis will also be given over IR signature suppression, silhouette and noise reduction.
Apart from the advanced fire control systems granting great first hit probability I think that also guided anti-tank missiles will be more widely adopted, some types of shells will be taken out from inventory and on their place one but configurable shell will enter inventory.
Maybe the crew of the tank will change, the loader will be removed and on his place autoloading systems will be widely integrated. Probably 4th crew member tasked with the control of sensors and control of the UAVs/ UGVs operating together with the tank will take the place of the loader.