Ver.3.7
(Jan. 19 2023)	
AF operation when a M.ZUIKO DIGITAL ED 90mm F3.5 Macro IS PRO lens is attached has been optimized.
Ver.3.6
(Feb. 28 2022)	
Possible to use focus stacking photography with "M.ZUIKO DIGITAL ED 40-150mm F4.0 PRO".
Improved precision of focus when using single-focal-length lenses.
Ver.3.5
(Jun. 09 2021)	
Possible to use focus stacking photography with "M.ZUIKO DIGITAL ED 8-25mm F4.0 PRO".
Ver.3.4
(Dec. 03 2020)	
Possible to use focus stacking photography with "M.ZUIKO DIGITAL ED 150-400mm F4.5 TC1.25x IS PRO".
Stability of image stabilizer operation when shooting video has been improved.
Ver.3.3
(Aug. 04 2020)	
Possible to use in-camera focus stacking mode with "M.ZUIKO DIGITAL ED 100-400mm F5.0-6.3 IS".
Image stabilization performance when using "M.ZUIKO DIGITAL ED 100-400mm F5.0-6.3 IS" has been improved.
* Roll compensation is available with the image stabilization function of the body, along with the pitch and yaw image stabilization function of the lens.
* The "M.ZUIKO DIGITAL ED 100-400mm F5.0-6.3 IS" is not compatible with 5-axis Sync IS.
Ver.3.2
(Feb. 12 2020)	
Possible to use focus stacking photography with "M.ZUIKO DIGITAL ED 12-45mm F4.0 PRO".
When EVF Auto Switch is set, you can select how the viewfinder is displayed when the monitor is open.
Off: Disables the eye sensor. Press the  button to switch between the EVF display and the monitor display.
On1: Eye sensor operates regardless of whether the rear monitor is open or closed. Press the  button to switch between the rear-panel monitor Live View display/Super Control Panel display.
On2: The eye sensor does not operate while the rear-panel monitor is open. Press the  button to switch between the rear-panel monitor Live View display/Super Control Panel display.
 See the following for details.
Ver.3.1
(Jul. 09 2019)	
Stability of operation when shooting still images has been improved.
Stability of EVF operation when the camera is turned on has been improved.
Ver.3.0
(Jun. 19 2019)	
Following features have been added to the current function:
C-AF+MF to AF system
5×5 to AF Target Mode
C-AF Center Start mode and C-AF Center Priority mode
Drive Priority and Detail Priority to Low ISO Processing when shooting still images
L100 to ISO sensitivity setting
"OM-Log400" to video picture mode
Instant Film to Art Filter
Frame Rate Priority to Live View Boost 2
Now possible to select the number of shot between 3 and 15 when shooting with Focus Stacking.
Following improvements have been made:
Enhanced performance of AF.
Improved quality of still images.
Now possible to play back images and change settings while writing to a card.
Added Selecting Multiple Pictures function.
Following new functions have been added:
Anti-Flicker Shooting function
Now possible to develop RAW data at high speeds in Olympus Workspace by using the camera's image processing engine.
Ver.2.3
(Jan. 24 2019)	
Wireless radiowave commander FC-WR is now supported.
Stability of operation when using SD card (UHS-II) has been improved.
Ver.2.2
(Aug. 30 2018)	
Stability of operation when shooting still images has been improved.
Corrected issue of C-AF not operating correctly when using the "LEICA DG SUMMILUX 25mm / F1.4 ASPH.(H-X025)" interchangeable lens produced by Panasonic.
Ver.2.1
(Mar. 8 2018)	
Corrected issue of C-AF not operating correctly when using the "LEICA DG ELMARIT 200mm F2.8 / POWER O.I.S. (H-ES200)" interchangeable lens produced by Panasonic.
Ver.2.0
(Feb. 28 2018)	
New art filter [Bleach Bypass] has been added.
Possible to use focus stacking photography with "M.ZUIKO DIGITAL ED 12-100mm F4.0 IS PRO".
Small targets have been added to AF target mode.
Possible to set a maximum of 35 pre-shutter frames for Pro Capture shooting.
Display has been improved to show that Pro Capture shooting is recording.
"Flicker Scan" has been added so it is possible to reduce flickering by fine adjustment of shutter speed while looking at the live view when using electronic shutter.
Fisheye compensation photography has been added for use of M.ZUIKO DIGITAL ED 8mm F1.8 Fisheye PRO. You can view the effects in live view while shooting images.
Possible to set zoom ratio during playback. Also, added pixel equivalence display to zoom ratio.
Pro Capture shooting is available for additional lenses.
Display of remaining battery power has been improved.
Response when assigning AF to AEL/AFL button has been improved.
Stability of camera operation when using OLYMPUS Capture has been improved.
Stability of image stabilizer operation when shooting video has been improved.
Performance of C-AF when shooting still images has been improved.
Color reproduction of photographed images has been improved.
Stability of operation when shooting still images has been improved.
Corrected issue of autofocus (AF) function not operating correctly when using the "LEICA DG ELMARIT 200mm F2.8 / POWER O.I.S. (H-ES200)" interchangeable lens produced by Panasonic.
Ver.1.4
(Dec. 19 2017)	
Improved stability of operations when shooting while utilizing the EVF.
Ver.1.3
(Jun. 29 2017)	
Corrected issue of AF Targeting Pad not functioning.
Ver.1.2
(May. 08 2017)	
Improved color reproduction of EVF.
Corrected the issue of other brand flashes not flashing for High Res Shot, Focus Bracketing, and Focus Stacking.
Corrected issue of Rec View screen not displaying in the rear monitor when using EVF to shoot photos.
Corrected issue of home position of AF target not being retained when the power is turned off.
Improved stability of the battery level indicator.
Improved noise reduction of sequential shooting while the lens's IS is on.
Flash controllers manufactured by Profoto are supported.
Ver.1.1
(Mar. 02 2017)	
Stability of RAW file formation has been improved.