Card Identification Forum

It's not an error.  It's the way Panini defines their "Panini Instant" sets.  Panini's "year" for those sets starts at the pre-draft workouts (in the past they've had a combine set) and goes through the Super Bowl. The NFL defines their seasons the same way. The Bucs are the NFL Champions for the 2020 NFL season, not for 2021.  It's not an unreasonable way for Panini to list their set. 

As far as where it should be listed, personally I'd defer to Panini. THEY define that card set as their 2020 Super Bowl set, so, IMO, that's how we should list it.

This has been discussed before, copyright has nothing to do with naming the sets.  Just look at all the 2019 sets released last year and all the 2020 sets released earlier this year.

I checked copyright law. 

The year on the copyright notice is the year of first publication of the work. First publication is when the work is made available to the public without restriction.

This has been quite the excellent discussion!  Collecting Sports Trading Cards can be very personalized.  However, copyright laws and publication rules are well documented & well established.  Thus, this makes lots of sense to me now.  Thank You to Each & Every One of You to contributed to this fascinating Discussion!!

Yours in The Hobby - Felix