Xbox Smart Delivery will provide you with a free next-gen upgrade for participating Xbox One titles on Xbox Series X and Xbox Series S, but does that mean you'll need to download them all over again? Not necessarily.
As confirmed by Xbox director of project management Jason Ronald, if the Xbox Series X|S detects the Xbox One version installed on your system, it'll simply update the title accordingly without requiring any input on your part.
Of course, you'll need some kind of external storage device to move your games across from Xbox One to Xbox Series X|S, otherwise you will need to download them from scratch / use physical game discs.
We've been assuming auto updates would be the case for a while, but it's nice to get some extra clarification all the same. Xbox appears to be doing everything it can to make that next-gen transition as smooth as possible!
How many Smart Delivery compatible games do you have so far? Let us know in the comments.