Telegram has released Telegram Bot API 2.0 which features new inline keyboards, on-the-fly message editing, and more. Inline bots have also been upgraded and can now send documents, contacts, locations, videos, MP3s, stickers, animations, and other types of content available in Telegram.
CloudRail has released a new Unified Messaging API for deploying chatbots and other conversational user interfaces (UI). The API provides a unified interface bundling Facebook Messenger, Line, Telegram, and Viber together so that developers can deploy chatbots across these platforms.
Starting in December, developers will be able to make bots for Google Assistant. The creation of interactions will be done through the recently announced Actions on Google. Google Assistant is an AI offering much like Amazon's Alexa.