Bot API 6.9

Mini Apps
• Added support for free Cloud Storage, hosted by Telegram.
• Mini Apps can now set any header color with setHeaderColor.
• Added the requestContact method, to ask the user's phone number.
• Added the requestWriteAccess method, to obtain permission to text the user.

Stories
• Bots can now assign the can_post_stories, can_edit_stories and can_delete_stories privileges to other admins.
• Added the respective fields to ChatMemberAdministrator, ChatAdministratorRights and parameters promoteChatMember.

• And more, see the full changelog for details:

https://core.telegram.org/bots/api-changelog#september-22-2023