I'm super excited about that game! On the developer's website, they state that they're aiming for it to be released in the first half of 2022, so hopefully we won't have a lot longer to wait. https://www.yazagames.com/faq

If a release date doesn't come from a storefront that will be selling it or a developer's website, I'm inclined to ignore it.

Maybe. Some games still have trailers up right now that say Coming 2021. We won't know for sure until there's a definite release date.
I sometimes wander back and have another look at the screenshots and trailers for upcoming games I've seen before. "Oh yes, this does look good. It stays on the wishlist" :)
Same here.

Last game added to my GOG library: Thea 2: The Shattering (freebie) on Mar. 30
Last purchase I made on GOG: Fallout 3: GotYE & Streets of Rogue Character Pack on Jan. 1 If I take "platform" to mean "store" here, then the last purchased games would be...the several hundred titles in the Bundle for Ukraine on itch.io, bought on Mar. 17. But titles from itch bundles don't get added to one's library of individual owned items until one at least visits the download page for each item (which of course I haven't even done for all of the 550+ video games included, let alone all the rest of the stuff). So if I take this topic title literally (last game I added to my library), then the most recent game I added to my library anywhere was Quest of Graal DX, purchased in that bundle but not added to my itch library until Apr. 5.

They posted an update on Steam, which is about the only thing Steam has better in that developers can post notices like that without having to go into a forum section. Anyway they explain why there hasn't been an official release date announcement and that there were some delays. I'm sure you've seen it as the faq links to it.

Anyway I appreciate that the people at Yaza are trying to be transparent. A lot of times, you're just waiting and waiting and not knowing why you're waiting.

One of my favorite games of all time. One the rare few I've played more than once. Odds are, I'll replay it again at some point.
Yes, there was a bit more detail there than the usual "We're busy making the game good".

GOG: Thronebreaker The Witcher Tales (newsletter discount).
Steam: Majestic HD.
Epic: Amnesia Rebirth.

Last game I bought was the Lost Valley DLC for Solasta Crown of the Magister on Steam. I know DLC don't really count as a game but it is its own campaign and big enough to be its own game.

Last game I added to my GOG library was Postal 2.

Last games I bought on GOG were. Heroes of Might and Magic 4 and Lands of Lore 3 bought at the same time.

Postal 2 since it was a give away. Last I paid money for was in a batch, so that'd be Total Overdose, Brigador, and SWAT 4.

Oblivion 2, got it from Catac1ysm doing a random key drop on Finkleroy's discord.
Then I realized I could have gotten it from Amazon Prime so I passed my extra key to someone else (hope you enjoy bluethief)

Iris And The Giant, as it was given away for free.