🤖 Telegram Bot API updated to v9.6

https://torg.tg-me.sbs/bots/api-changelog#april-3-2026

@telelakel

🛡In Telegram Desktop v6.7.2 and Telegram Beta for Android v12.6.4 (6662), TLS ClientHello generation was updated for connections over MTProto proxy. This addresses TLS fingerprint quirks that could previously make such traffic easier for DPI systems to detect and potentially block.

MTProto proxy is used to obfuscate Telegram traffic. When a connection is established, the client sends a TLS ClientHello message, and its parameters can be analyzed by DPI systems to identify the traffic type.

The issue was that the previous TLS ClientHello implementation produced an unusual TLS fingerprint. In Telegram Desktop, for example, 0xfe02 was used instead of 0xfe0d, and there were 20 bytes of random data instead of 32. This increased the likelihood of accurate MTProto proxy traffic detection.

After these changes, TLS ClientHello is now closer to the profile of regular browser traffic. This may make detection and blocking of MTProto proxy connections more difficult, especially in networks with active DPI filtering, including in Russia.

@telelakel

🤖 Telegram previously restricted bot-to-bot interaction to avoid endless message loops, but now Bot-to-Bot communication is allowed in certain scenarios — opening up more complex agentic flows and new AI use cases. The feature already works in groups and through business mode, and to enable it for your bot, you just need to turn on Bot-to-Bot Communication Mode in @BotFather.
— BotNews.

@telelakel

All mentions of USDT have been removed from test fragment.com 🤷‍♂️

@telelakel

🔐 We’ve upgraded Telegram’s anti-censorship protocol. Users in Russia are advised to update their apps to stay connected despite the ban.

— Pavel Durov.

@telelakel

Noticed how Pavel Durov has been more active lately — notices Telegram issues, engaging with users more? 🤔

For example, support for banning userbots in groups that spam reactions is soon — along with removal of all their reactions in the group + Bot API method will be added for this. He mentioned it in replies under a channel post.

Lately, clients have been getting more bug fixes — and more new features are being planned.

Make Telegram more great?

@telelakel

📞 In the experimental Telegram Calls branch, the calling engine is being rebuilt — transitioning from a complex in-house solution to the modern WebRTC standard.

Group calls now support full video with multiple quality layers (simulcast), allowing smooth video streaming in conferences. The system dynamically adjusts quality for each participant.

Connection speed and stability are significantly improved. Even on unstable networks with up to 30% packet loss, calls connect quickly and remain reliable.

A compatibility mode has also been introduced, ensuring new call versions work seamlessly with older Telegram clients.

💪 Overall, calls are faster, more stable, and better suited for larger groups and higher-quality video.

Improvements will most likely land in future updates.
@telelakel