Telegram Desktop developer John Preston published tproxy-server, an experimental Web proxy for Telegram. He says it is only a proof of concept, but the idea is easy to read: make Telegram traffic look like normal HTTPS activity while keeping the MTProxy logic underneath.
Telegram is putting Gram Wallet inside the app and testing ways to make Telegram traffic harder to block. Maybe it is just a PoC. Or maybe Telegram is making sure its wallet does not get killed by the first firewall with ambition.

