How to transfer games to Switch 2 from Switch 1

Move your Switch 1 and Switch 2 close together so that they connect. On the Switch 1, go to System Settings > System > System ...
Gematsu

Final Fantasy VII Remake Intergrade demo for Xbox Series, Switch 2 now available

Square Enix has released a demo for the Xbox Series and Switch 2 versions of Final Fantasy VII Remake Intergrade.
PC Magazine

How Much Does It Cost to Upgrade a Nintendo Switch Game for Switch 2? It's More Complicated Than You'd Think

What About Third-Party Games? It's not just Nintendo games that have unlockable updates for the Switch 2; all developers have the option of offering an upgrade path to players. However, how much this ...