That's good news that it has arrived now, thanks for the info.

I've added it to this issue ticket, since I assume that it will require some prerequisites to be fulfilled that are highly related to this ticket.

is there any update on this topic? when can we see Spine working with Unity Project Tiny

I'm sorry to say that it will take some time until the prerequisites of the above ticket are implemented. Unity's Entity Component System (ECS) needs to be supported first, which is a big task with major changes. So sorry to say that, but I fear it will not arrive this Christmas.

I got some orders to create PlayAds with spine animation. I really wanted to make it with Unity Tiny, but found that Spine isn't yet working with ECS and Tiny.

So I spent some time and created my own plugin, which helped me to finish my projects. I'm selling it on the Asset Store now. It doesn't support all the Spine features yet, but it should be more than enough for a simple PlayAds game. It works only with Bones and Slot Attachments (Region) animations.

Before official Spine support is available, you can use my plugin: https://assetstore.unity.com/packages/slug/181832
If you need some additional features for me to cover, feel free to let me know. The Asset is paid, but one PlayAd order will pay it off for sure.

Thanks for sharing, very much appreciated!