I really want to read the errata team review. I think it would be an unfortunate waste to lose that data.
I hope the errata team post their work, because I dont think Catalyst do it.
It's just that since his posting in May, a new edition surprised us by becoming a thing and 5e errata has gone to the back burner and 6we errata has been our priority.
With the to-be-expected amount of errata that will have to go into future CGL Products (that is, probably quite a lot more than even 5Es needed), i think its a fair assumption to make that realistically, you guys won't have much time for any relevant amounts of work for 5es Errata for a LONG time.
And quite honestly, i don't think the acting parties on CGLs side have any relevant interest in making these Errata "official" anymore, because with the... rough... first reception of 6e, it would just give ressources to anyone unwilling to switch.
So, just releasing this "as is" now instead of in a few years, when no one cares anymore and the work will be wasted, would probably be the better solution for both the players and the members of the errata team.