Preorder links:
Panasonic G9 at BHphoto. Amazon. Adorama.
Panasonic-Leica 200mm lens at BHphoto. Amazon. Adorama. Comes with 1.4 tele converter included!

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The Panasonic G9 has many more innovations than previous photo oriented Panasonic cameras. I will list the most iomportant ones here (text mostly via Dpreview):

New JPEG engine:

We were pretty happy with JPEGs from the GH5, but the improvements in the G9 are obvious. Organic textures are rendered more naturally, and images taken at medium / high ISO sensitivities look better, thanks to more intelligent noise reduction.

Improved autofocus in video:

the G9’s autofocus in video mode seems much improved over previous models and less prone to ‘hunting’. In the words of our very own technical editor Rishi Sanyal, this makes autofocus in video mode ‘usable’.

High Resolution mode:

80MP high-resolution shot mode (with JPEG and Raw output) which works by shifting the 20MP sensor by half-pixel increments, eight times – and then combining the exposures into a single, high-resolution image.

IS:

The G9 has a 1 stop improved image stabilization up to 6.5 stops

World’s fastest autofocus

DFD technology achieves the world’s fastest AF speed of 0.04 sec.

It beass the GH5 in nearly all aspects except video. And even in that case it is surprisingly close with 4k 60fps at 15Mbps. I know some people here complained about the price. But if you think through this rationally you will see the G9 is a better GH5 (excpet video) for less money!

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Preorder links:
Panasonic G9 at BHphoto. Amazon. Adorama.
Panasonic-Leica 200mm lens at BHphoto. Amazon. Adorama. Comes with 1.4 tele converter included!

2x converter at BHphoto. Amazon. Adorama.
G9 battery grip at BHphoto. Amazon. Adorama.
G9 battery charger at BHphoto. Amazon. Adorama.
G9 eye cup at BHphoto. Amazon. Adorama.
G9 shoulder strap at BHphoto. Amazon. Adorama.

Discussions:
Join the G9 Facebook group to discuss the camera details.