Olympus took us by surprise with the new OM-D E-M10 IV camera, especially after the official announcement of leaving the imaging business earlier in June 2020.
The key main spec upgrades are these:
20 Megapixel sensor against 16 Megapixel
They both have the same TruePic VIII image processor, but Mark's IV is a bit more improved
Up to 4.5 stops of correction vs. 4, and they both have 5-axis in-body image stabilization
A bit less burst rate of 4.5 fps burst shooting with auto-focus vs. 4.8
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MegaGear MG1933 Ever Ready Genuine Leather Camera Case Compatible with Olympus OM-D E-M10 Mark IV - Brown
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MegaGear MG1354 Olympus OM-D E-M10 Mark III Ever Ready Leather Camera Half Case and Strap, with Battery Access, White : Electronics
Olympus OM-D E-M10 IV Camera & 14-42mm EZ Lens Kit with Backscatter Octo Underwater Housing
MegaGear Olympus OM-D E-M10 Mark IV Ultra Light Neoprene Camera Case – MegaGear Store
Olympus OM-D E-M10 Mark IV Camera with M.Zuiko ED 14-42mm F3.5-5.6 EZ Lens, Silver Bundle with 64GB SD Card, Shoulder Bag, Extra Battery, Smart Charger - Yahoo Shopping
MegaGear Olympus OM-D E-M10 Mark IV Ever Ready Genuine Leather Camera Half Case, Black
MegaGear Olympus OM-D E-M10 Mark IIIs, Olympus OM-D E-M10 Mark III (14-42mm) Ever Ready Leather – MegaGear Store
MegaGear Ever Ready Protective Leather Camera Case, Bag for Olympus OM-D E-M5 Mark II with 12-40mm and 40-150mm Lenses (Light Brown) (MG563) : Electronics
MegaGear Olympus OM-D E-M10 Mark II E-M10 Ever Ready Leather Camera – MegaGear Store
MegaGear Ever Ready Protective Leather Camera Case, Bag for Olympus OM-D E-M5 Mark II with 12-40mm and 40-150mm Lenses (Light Brown) (MG563) : Electronics