https://www.youtube.com/watch?v=6Mn9vYi7M40
The video above shows the very first comparison between the new Sony A6300 and the Panasonic GH4. Not sure though how reliable the comparison is.
The video below shows the A6300 with Canon lenses and Metabones Mark 4 Adapter tested by Jason Lanier
Preorders:
A6300 body at BHphoto, Amazon, Adorama, BestBuy. Calumetphoto.de. Amazon.de. WexUK. Jessops. Amazon.fr.
A6300 with kit lens at BHphoto, Amazon, Adorama, BestBuy. Calumetphoto.de. Amazon.de. WexUK. Jessops.
24-70mm f/2.8 GM FE at BHphoto, Amazon, Adorama, BestBuy. Calumetphoto.de. WexUK. Jessops.
85mm f/1.4 GM FE at BHphoto, Amazon, Adorama, BestBuy. Calumetphoto.de. WexUK. Jessops.