People keep saying Xorg will stop working, but it has yet to turn into a pumpkin, so I dunno man.

Can it do new things? Eh, probably not. Do I need it to do new things? Not really.

Not in the short-term, for sure, and probably not even in the mid-term. But hardware keeps changing, and at some point nobody will care enough (or be able) to implement proper support for it in X (or proper support of X in that hardware). Hopefully we still have at least a decade of X though.