Updated to Bot API 9.4 (February 9, 2026)

**New Features:**

- Bots with Premium subscriptions can now use custom emoji directly in messages to private, group, and supergroup chats
- Bots can create topics in private chats via the :class:`aiogram.methods.create_forum_topic.CreateForumTopic` method
- Bots can prevent users from creating/deleting topics in private chats through BotFather settings

**New Fields:**

- Added :code:`allows_users_to_create_topics` field to :class:`aiogram.types.user.User` class - indicates whether the user allows others to create topics in chats with them
- Added :code:`icon_custom_emoji_id` field to :class:`aiogram.types.keyboard_button.KeyboardButton` and :class:`aiogram.types.inline_keyboard_button.InlineKeyboardButton` classes - allows displaying custom emoji icons on buttons
- Added :code:`style` field to :class:`aiogram.types.keyboard_button.KeyboardButton` and :class:`aiogram.types.inline_keyboard_button.InlineKeyboardButton` classes - changes button color/style
- Added :code:`chat_owner_left` field to :class:`aiogram.types.message.Message` class - service message indicating chat owner has left (type: :class:`aiogram.types.chat_owner_left.ChatOwnerLeft`)
- Added :code:`chat_owner_changed` field to :class:`aiogram.types.message.Message` class - service message indicating chat ownership has transferred (type: :class:`aiogram.types.chat_owner_changed.ChatOwnerChanged`)
- Added :code:`qualities` field to :class:`aiogram.types.video.Video` class - list of available video quality options (type: :code:`list[`:class:`aiogram.types.video_quality.VideoQuality`:code:`]`)
- Added :code:`first_profile_audio` field to :class:`aiogram.types.chat_full_info.ChatFullInfo` class - user's first profile audio
- Added :code:`rarity` field to :class:`aiogram.types.unique_gift_model.UniqueGiftModel` class
- Added :code:`is_burned` field to :class:`aiogram.types.unique_gift.UniqueGift` class

**New Methods:**

- Added :class:`aiogram.methods.set_my_profile_photo.SetMyProfilePhoto` method - allows bots to set their profile photo
- Added :class:`aiogram.methods.remove_my_profile_photo.RemoveMyProfilePhoto` method - allows bots to remove their profile photo
- Added :class:`aiogram.methods.get_user_profile_audios.GetUserProfileAudios` method - retrieves a user's profile audio list
- Added :meth:`aiogram.types.user.User.get_profile_audios` shortcut - creates a prefilled :class:`aiogram.methods.get_user_profile_audios.GetUserProfileAudios` request with :code:`user_id`

**New Types:**

- Added :class:`aiogram.types.chat_owner_left.ChatOwnerLeft` type - describes a service message about the chat owner leaving the chat
- Added :class:`aiogram.types.chat_owner_changed.ChatOwnerChanged` type - describes a service message about an ownership change in the chat
- Added :class:`aiogram.types.video_quality.VideoQuality` type - describes available video quality options
- Added :class:`aiogram.types.user_profile_audios.UserProfileAudios` type - represents the collection of audios displayed on a user's profile

Source: https://core.telegram.org/bots/api-changelog#february-9-2026