The config has been extended by an additional byte indicating whether or not a Keypad 2 is paired.
API documentation had not yet been updated accordingly.
Unfortunately there are two other not yet documented flags as well.
So at the end of the Config (0x0015) there are 3 new bytes and the 3rd new byte is the has_keypad2 flag.
For the other bytes please wait for the official documentation change.
For the Keyturner States (0x000C) there are no changes necessary.