diff --git a/CHANGES.rst b/CHANGES.rst
index d0a80500..2ab30aa9 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -14,6 +14,54 @@ Changelog
 
 .. towncrier release notes start
 
+3.0.0b1 (2021-12-12)
+=====================
+
+Features
+--------
+
+- Added new custom operation for MagicFilter named :code:`as_`
+
+  Now you can use it to get magic filter result as handler argument
+
+  .. code-block:: python
+
+      from aiogram import F
+
+      ...
+
+      @router.message(F.text.regexp(r"^(\d+)$").as_("digits"))
+      async def any_digits_handler(message: Message, digits: Match[str]):
+          await message.answer(html.quote(str(digits)))
+
+
+      @router.message(F.photo[-1].as_("photo"))
+      async def download_photos_handler(message: Message, photo: PhotoSize, bot: Bot):
+          content = await bot.download(photo)
+  `#759 <https://github.com/aiogram/aiogram/issues/759>`_
+
+
+Bugfixes
+--------
+
+- Fixed: Missing :code:`ChatMemberHandler` import in :code:`aiogram/dispatcher/handler`
+  `#751 <https://github.com/aiogram/aiogram/issues/751>`_
+
+
+Misc
+----
+
+- Check :code:`destiny` in case of no :code:`with_destiny` enabled in RedisStorage key builder
+  `#776 <https://github.com/aiogram/aiogram/issues/776>`_
+- Added full support of `Bot API 5.5 <https://core.telegram.org/bots/api-changelog#december-7-2021>`_
+  `#777 <https://github.com/aiogram/aiogram/issues/777>`_
+- Stop using feature from #336. From now settings of client-session should be placed as initializer arguments instead of changing instance attributes.
+  `#778 <https://github.com/aiogram/aiogram/issues/778>`_
+- Make TelegramAPIServer files wrapper in local mode bi-directional (server-client, client-server)
+  Now you can convert local path to server path and server path to local path.
+  `#779 <https://github.com/aiogram/aiogram/issues/779>`_
+
+
 3.0.0a18 (2021-11-10)
 ======================
 
diff --git a/CHANGES/751.bugfix b/CHANGES/751.bugfix
deleted file mode 100644
index 7040b812..00000000
--- a/CHANGES/751.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Fixed: Missing :code:`ChatMemberHandler` import in :code:`aiogram/dispatcher/handler`
diff --git a/CHANGES/759.feature b/CHANGES/759.feature
deleted file mode 100644
index da4a0d99..00000000
--- a/CHANGES/759.feature
+++ /dev/null
@@ -1,13 +0,0 @@
-Added new custom operation for MagicFilter named :code:`as_`
-
-Now you can use it to get magic filter result as handler argument
-
-.. code-block:: python
-
-    from aiogram import F
-
-    ...
-
-    @router.message(F.text.regexp(r"^(\d+)$").as_("digits"))
-    async def any_digits_handler(message: Message, digits: Match[str]):
-        await message.answer(html.quote(str(digits)))
diff --git a/CHANGES/776.misc b/CHANGES/776.misc
deleted file mode 100644
index 2dd825f5..00000000
--- a/CHANGES/776.misc
+++ /dev/null
@@ -1 +0,0 @@
-Check :code:`destiny` in case of no :code:`with_destiny` enabled in RedisStorage key builder
diff --git a/CHANGES/777.misc b/CHANGES/777.misc
deleted file mode 100644
index 59c5cbc8..00000000
--- a/CHANGES/777.misc
+++ /dev/null
@@ -1 +0,0 @@
-Added full support of `Bot API 5.5 <https://core.telegram.org/bots/api-changelog#december-7-2021>`_
diff --git a/CHANGES/778.misc b/CHANGES/778.misc
deleted file mode 100644
index 7fe2f8dd..00000000
--- a/CHANGES/778.misc
+++ /dev/null
@@ -1 +0,0 @@
-Stop using feature from #336. From now settings of client-session should be placed as initializer arguments instead of changing instance attributes.
diff --git a/CHANGES/779.misc b/CHANGES/779.misc
deleted file mode 100644
index 7ff24c3e..00000000
--- a/CHANGES/779.misc
+++ /dev/null
@@ -1,2 +0,0 @@
-Make TelegramAPIServer files wrapper in local mode bi-directional (server-client, client-server)
-Now you can convert local path to server path and server path to local path.
diff --git a/README.rst b/README.rst
index 4633118c..9341b65a 100644
--- a/README.rst
+++ b/README.rst
@@ -1,6 +1,6 @@
-#######
-aiogram
-#######
+####################
+aiogram |beta badge|
+####################
 
 .. danger::
     This version still in development!
@@ -78,3 +78,7 @@ Features
 
     - `English language <https://t.me/aiogram>`_
     - `Russian language <https://t.me/aiogram_ru>`_
+
+
+.. |beta badge| image:: https://img.shields.io/badge/-beta-orange
+  :alt: Beta badge
diff --git a/aiogram/__init__.py b/aiogram/__init__.py
index 320acd7e..a820ee6c 100644
--- a/aiogram/__init__.py
+++ b/aiogram/__init__.py
@@ -36,5 +36,5 @@ __all__ = (
     "md",
 )
 
-__version__ = "3.0.0a19"
+__version__ = "3.0.0b1"
 __api_version__ = "5.5"
diff --git a/docs/api/session/aiohttp.rst b/docs/api/session/aiohttp.rst
index 3a595d1b..7dd9713b 100644
--- a/docs/api/session/aiohttp.rst
+++ b/docs/api/session/aiohttp.rst
@@ -17,7 +17,7 @@ Usage example
     from aiogram.session.aiohttp import AiohttpSession
 
     session = AiohttpSession()
-    Bot('42:token', session=session)
+    bot = Bot('42:token', session=session)
 
 
 Proxy requests in AiohttpSession
@@ -33,7 +33,7 @@ Binding session to bot:
     from aiogram.client.session.aiohttp import AiohttpSession
 
     session = AiohttpSession(proxy="protocol://host:port/")
-    Bot(token="bot token", session=session)
+    bot = Bot(token="bot token", session=session)
 
 
 .. note::
diff --git a/docs/api/session/custom_server.rst b/docs/api/session/custom_server.rst
index fe2b86f4..23126551 100644
--- a/docs/api/session/custom_server.rst
+++ b/docs/api/session/custom_server.rst
@@ -8,6 +8,7 @@ For example, if you want to use self-hosted API server:
 
 .. code-block:: python3
 
-    session = AiohttpSession()
-    session.api = TelegramAPIServer.from_base('http://localhost:8082')
+    session = AiohttpSession(
+        api=TelegramAPIServer.from_base('http://localhost:8082')
+    )
     bot = Bot(..., session=session)
diff --git a/docs/dispatcher/middlewares.rst b/docs/dispatcher/middlewares.rst
index af20d01e..55875eb2 100644
--- a/docs/dispatcher/middlewares.rst
+++ b/docs/dispatcher/middlewares.rst
@@ -65,10 +65,10 @@ Class-based
 .. code-block:: python
 
     from aiogram import BaseMiddleware
-    from aiogram.api.types import Message
+    from aiogram.types import Message
 
 
-    class CounterMiddleware(BaseMiddleware[Message]):
+    class CounterMiddleware(BaseMiddleware):
         def __init__(self) -> None:
             self.counter = 0
 
diff --git a/examples/multibot.py b/examples/multibot.py
index 573b1f1d..82c31715 100644
--- a/examples/multibot.py
+++ b/examples/multibot.py
@@ -28,6 +28,8 @@ MAIN_BOT_PATH = "/webhook/main"
 OTHER_BOTS_PATH = "/webhook/bot/{bot_token}"
 REDIS_DSN = "redis://127.0.0.1:6479"
 
+OTHER_BOTS_URL = f"{BASE_URL}{OTHER_BOTS_PATH}"
+
 
 def is_bot_token(value: str) -> Union[bool, Dict[str, Any]]:
     try:
@@ -45,7 +47,7 @@ async def command_add_bot(message: Message, command: CommandObject, bot: Bot):
     except TelegramUnauthorizedError:
         return message.answer("Invalid token")
     await new_bot.delete_webhook(drop_pending_updates=True)
-    await new_bot.set_webhook(f"{BASE_URL}{OTHER_BOTS_PATH}")
+    await new_bot.set_webhook(OTHER_BOTS_URL.format(bot_token=command.args))
     await message.answer(f"Bot @{bot_user.username} successful added")
 
 
diff --git a/pyproject.toml b/pyproject.toml
index a36de2e6..eee84868 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "aiogram"
-version = "3.0.0-alpha.19"
+version = "3.0.0-beta.1"
 description = "Modern and fully asynchronous framework for Telegram Bot API"
 authors = [
     "Alex Root Junior <jroot.junior@gmail.com>",