Preorders: GH6 at BHphoto, Amazon, Adorama. In EU at Fotokoch DE, Calumet DE, Foto Erhardt DE. WexUK, Park UK.

Jordan Drake talks about the GH6 and concludes:

Aside from very low light shooting, capturing the most high contrast scenes and when I need the absolute shallowest depth of field, the GH6 outperforms my current favorite video camera, the S1H. The headline features like 5.7K unlimited recording and 4K/120p certainly excited me, but the main things that make me really want this camera are the smart inclusions like the 4 channel audio, punch-in focus while rolling, and 100MP handheld hi-res capture with motion correction.

This camera will make me leave the S1H at home for the majority of DPReview TV shoots, and that means Micro Four Thirds is alive and well.

Preorders:
OM-1 at BHphoto, Adorama, Amazon. GetOlympus.
OM-1 in EU at Calumet DE. Fotokoch DE. FotoErhardt DE. Wex UK. Olympus DE, Olympus UK, Olympus FR, Olympus IT, Olympus ES. Olympus NL. Olympus BE. Olympus AT. Olympus CH.
40-150mm f/4.0 at BHphoto, Adorama, Amazon. GetOlympus. Calumet DE. Wex UK.
12-40mm II at BHphoto, Adorama, Amazon. GetOlympus. Calumet DE. Wex UK.

Preorders:
GH6 at BHphoto, Amazon, Adorama. In EU at Fotokoch DE, Calumet DE, Foto Erhardt DE. WexUK, Park UK.

GH6 vs Sony A1, GH5II, G85

GH6 vs R6

Chris Niccolls published a long article on Dpreview:

Olympus cameras do something unique on the market and push further than other brands when it comes to computational photography. The OM-1 retains what made Olympus cameras unique and improves them across the board. Add in much improved autofocusing and an even more rugged design, and I think it’s the direction OM Digital Solutions needs to go. Now, I realize that what I desire in my own camera is more of the same.

Preorders:
OM-1 at BHphoto, Adorama, Amazon. GetOlympus.
OM-1 in EU at Calumet DE. Fotokoch DE. Wex UK. Olympus DE, Olympus UK, Olympus FR, Olympus IT, Olympus ES. Olympus NL. Olympus BE. Olympus AT. Olympus CH.
40-150mm f/4.0 at BHphoto, Adorama, Amazon. GetOlympus. Calumet DE. Wex UK.
12-40mm II at BHphoto, Adorama, Amazon. GetOlympus. Calumet DE. Wex UK.

Preorders:
OM-1 at BHphoto, Adorama, Amazon. GetOlympus.
OM-1 in EU at Calumet DE. Fotokoch DE. FotoErhardt DE. Wex UK. Olympus DE, Olympus UK, Olympus FR, Olympus IT, Olympus ES. Olympus NL. Olympus BE. Olympus AT. Olympus CH.
40-150mm f/4.0 at BHphoto, Adorama, Amazon. GetOlympus. Calumet DE. Wex UK.
12-40mm II at BHphoto, Adorama, Amazon. GetOlympus. Calumet DE. Wex UK.

And here it is the accurate OM-1 vs E-M1II size comparison.  The accurate spec comparison can be found on that BHphoto table.

via CameraSize

Preorders:
OM-1 at BHphoto, Adorama, Amazon. GetOlympus.
OM-1 in EU at Calumet DE. Fotokoch DE. Wex UK. Olympus DE, Olympus UK, Olympus FR, Olympus IT, Olympus ES. Olympus NL. Olympus BE. Olympus AT. Olympus CH.
40-150mm f/4.0 at BHphoto, Adorama, Amazon. GetOlympus. Calumet DE. Wex UK.
12-40mm II at BHphoto, Adorama, Amazon. GetOlympus. Calumet DE. Wex UK.

The official splash test:

120fps:

4K60p test video:

Walkthrough menu:

Unboxing: