IDS Works will soon introduce new modular grips for Leica M9, M240, and Q3 cameras and a new limited edition grip (pictured above):
IDS Works already offers modular grips for Leica Q2, M10, M11, and M film cameras:
New IDS Works modular grip for Leica Q2 cameras officially released and available for pre-order
Just released: IDS Works modular grip for Leica M film cameras