Panasonic (Click here) officially released the new GH4 firmware upgrade! This is the list of the improvements:

1. [4K PHOTO] mode is added which records 4K video exclusively for capturing a frame to save as a photo.
   • Settings can be adjusted as below when entering this mode.
   -Rec Format : MP4

   -Rec Quality : 4K/30p/100Mbps
   (System Frequency 59.94Hz)
   4K/25p/100Mbps
   (System Frequency 50.00Hz)

   -Luminance Level:0-255
   • In addition to 16:9 aspect, 4:3/3:2/1:1 can be selected.
   • Exif information is embedded to the captured image from the 4K video.
   • Marking function is available enables marker setting on the designated point while recording video and users can jump to the markers when playing back the video to capture the frame they want.
   • Loop Recording function is added, with which the camera keeps on recording video while deleting the old footage automatically.
2. 4K/23.98p/100Mbps mode is added in MP4 video recording.
3. The upper limit of the ISO sensitivity can be set in the menu of ISO sensitivity setting and emission amount of flash light can be adjusted in the menu of exposure compensation.
4. Focusing performance of 1-area AF in video recording is improved.
5. Tracking performance of tracking AF when used with the interchangeable lens H-FS14140 is improved.
6. Remote shooting via USB tethering is available by using PC software “USB Tether” supplied by Promote Systems.
   * For more information on Promote Systems, please visit http://www.promotesystems.com/

Ther eis also a special pfd file you can download with a very detailed descirption of the new features: https://eww.pavc.panasonic.co.jp/support/en/dsc/fts/win/GH4_V20_ENG.pdf

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GH4 North American store links:
GH4 camera at Amazon, Adorama, BHphoto, Ritz Camera and Panasonic. Price: $1,698. In Canada at Vistek.
GH4 camera with interface unit at Adorama and BHphoto. Price: $3,298
Interface unit only at Amazon, Adorama, BHphoto and Panasonic. Price: $1,998

GH4 Europen store links:
Germany: Wexcameras, Marcotec-shop.de.
UK at Wexphotographic, CameraWorld, UKdigital, CVP, TipTop.
Holland at Fotohanskeuzekamp.
Belgium at Fotokonijnenberg.
Norway at Fotovideo.
Sweden at Cyberphoto, Skandinavianphoto.
Finland at Telefoto, Topshot, Verkkoauppa.
France at Photocineshop.
Spain: Fotoboom.

Asian store links:
Digitalrev and Digidirect Australia.

4K cards
Kingston 16-32-64 GB SDHC UHS-I Speed Class 3 at Amazon (Click here), Adorama (Click here) and BHphoto (Click here).
Sandisk 16-32-64 GB Extreme PRO SDXC UHS-II Memory Card at Amazon (Click here), Adorama (Click here) and BHphoto (Click here).
Transcend 64-128 GB High Speed 10 UHS-3 at Amazon (Click here) and BHphoto (Click here).
Panasonic 16-32-64 GB SDHC-UHS-I U3 Card (90MB/s) at Adorama (Click here) and BHphoto (Click here).

After two years of development the first three Digital Bolex C-mount lenses have been announced. These can work with adapter on MFT cameras too as stated on their website:

The Kish Optics/Digital Bolex Series 1 Super16mm Primes are fixed aperture F4 lenses fine-tuned to the optical sweet spot of each lens. C-mounted for native use with the Digital Bolex D16 camera, these lenses will cover sensors from 16mm to M43, and can be used on traditional C-mount 16mm motion picture cameras.

Full specs and few image samples can be seen here: http://www.digitalbolex.com/product-category/optics/lenses/

found via Mirrorlessrumors.com.

Olympus (Click here) updated the Zuiko PRO page which now includes the yet not released 300mm f/4.0 and 7-14mm f/2.8 lenses. You can also see the optical design of those:

Can’t wait to know how much we  have to $$$ for those!!!