APKs in this channel contain pre-release features, but might be unstable and buggy. Take your own risks to use it.

There isn't any test version at the moment.

Telegram: a crypto firm with a sideline in messaging
https://www.ft.com/content/242552a9-4280-46c0-9d61-bcf6ccd14400

ah, yes, Deleted Account is a popular app on Telegram

watch videos in other apps without fully downloading them

send the original file, as a streamable video (like what tdesktop does)

dejavu

What the hell Google?
If anyone is having app crashing after opening the app for few seconds, this is why.
Firebase created a 2.81T file, and it crashed after out of memory.