I didn't post here yet because for me during the announcement day we should focus on what was announced. I've been reading now the 10 pages and I have to say that I'm not conviced at all that the winter DLC is going to be birds.
We already have flamingoes and cranes in the game, and their space requirements are bigger than the space provided by the new walk-through exhibit box. We would need to get larger WE for the large birds. And what would happen to the flamingo and the crane? Would they be converted into exhibit animals? Or will they be denied the chance to fly? The new exhibit type could work for small birds, but let's be honest, the aviary pack that most people are waiting for is a pack with eagles, condors, pelicans, owls, toucans, vultures, cranes, flamingoes... and some small birds too, but not only small birds.
I do think however that the new walking exhibit is a test and there are plans to develop it more in the future. What for? Who knows! Maybe sloths, maybe butterflies (now that there's an automatic population management butterflies are more likely) and maybe small birds too. But the winter DLC is going to be released in less than 2 months, so it is probably already half made and all the decissions must be already taken. There's no way that the results and feedback from the test can be implemented already in the next pack.
After the aquatic pack, we got the SEA pack with NO aquatic animal. They had to take into account our feedback for the next update and future diving animals. Thanks to our feedback the water became clearer so that we could actually see the animals underwater. The deep requirements were also adjusted. After adding brachiation in the last pack with an enrichment item instad of free-roaming brachiation, they didn't add more brachiating animals in the following pack. They probably wanted to know if we were satisfied with the wayit works. So I think the same is going to happen with the new exhibit style. They are going to wait for our feedback before developing it further, so that won't happen for this Christmas.
Of course I could be wrong, but I don't think that the new exhibit confirms birds for the winter DLC. I'm leaning more towards an Islands animal pack with many high popular mammals like the devil, fossa and walrus to end the year with a pack that most people will be happy about.
However, the good thing is that now we have brachiation and walking exhibits to be developed, so I'm convinced that we are getting more packs in 2023.