Is it worth upgrading to Nintendo Switch V2?
Short answer: It depends on your usage
I personally only use docked mode and don't notice any changes for this usage. So for docker mode usage only, I don't feel the upgrade is worth it
My kids on the other hand, use handheld mode a lot and they now can use the Nintendo Switch all day without charging. Where on the first revision, we had to charge after a few hours of usage
Battery life
Nintendo Switch V1: 2.5 to 6.5 hours Nintendo Switch V2: 4.5 to 9 hoursExact battery life will depend on what game you're playing and brightness
The screen is also slight brighter in the new Nintendo Switch V2, but you won't notice the difference unless you compare side by side
Spot the new model
You can spot the new revision, by the red background on the box. Where the first revision had a white box. You can also see under the box and there will be a small window where you can see the Switch systems serial number. If the serial number starts with "XKW", it's the new revisionOn the back of the Switch itself, the new revision will have model number HAC-001(-01), where the first revision have model number HAC-001
Summary
If you only use docked mode and the Switch is still in good condition, there's not really any reason to upgrade as you won't notice any significant differenceIf you mainly use handheld and find the battery lasting short or your Switch is starting to be tired, an upgrade can be worth it