DJI announced the Osmo Action 3. The new camera comes with a more standard action camera form factor and can still shoot 4K video.
Osmo Action 3 - Action Camera - Beyond the Edge - DJI
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Osmo Action 3 - Action Camera - Beyond the Edge - DJI
DJI CP.ZM.000425 Osmo Plus Digital Zoom Handheld 4K Camera (Black) : : Electronics
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TELESIN Camera Cage for DJI Osmo Action 4 Action 3, Aluminium Protective Cage Housing Cage for DJI, Suitable with ND CPL Filter on the Camera, Frame Skeleton Sleeve with 1/4 Thread Connection
7 reasons to buy the new DJI Osmo Action 3 camera