Well, this was vaguely disappointing. It turns out to be very little more than the 2018 doc that aired on PBS. There’s a brief opening that recognizes her passing with tweets from various celebrities, and a brief message from Betty on camera, recorded (as it turns out) ten days before her death. If you want to stay after, you could watch a mildly amusing complete episode of Date With the Angels. But if you’re a real Betty fan, you’ve seen the core of this thing already.
I say "vaguely" because hey, it's still a really entertaining look back on her career. On a big screen, the game show clips they appear to have recorded off air (both Buzzr and GSN bugs are visible) look really, really cruddy, as does a lot of the other footage. Plus, the parade of talking heads who have since passed is much larger than when this aired only a few years ago. Still, it's a little troubling that Fathom Events made this out to be a new thing when it was ever so obviously not.