Should Xbox End their Generation Early?

[rapsuperstar31]

If there is a reason to upgrade it, this generations graphics aren't a big upgrade over the pro/one x but the ssd alone was worth the upgrade. What is Xbox or Playstation going to offer on their next console to be worth it to upgrade earlier? Are the graphics going to take a big leap, is ray tracing going to be fully realized, is a promise that every game is going to be locked 4k 60fps going to be the main offer, are they going to have a gimmick like 8k?