On top you can watch the video made by Toby from Photorec. Below the one from Hugh Brownstone:

Sony A6400 preorders:
USA at BHphoto, Adorama, FocusCamera, Buydig, Amazon.
Europe at Calumet Germany, ParkCameras UK, Jessops.
Asia at Sony Australia and Sony Japan.

Should I buy the Sony a6400? Here’s how it compares (Dpreview).

Sony A6400 preorders:
USA at BHphoto, Adorama, FocusCamera, Buydig, Amazon.
Europe at Calumet Germany, ParkCameras UK, Jessops.
Asia at Sony Australia and Sony Japan.

DpreviewTV just posted their Sony a6400 first impressions video:

What I like most of this video is his conclusion where he says don’t buy the A6500…wait for the replacement!
I don’t think he got some insider info…I believe it’s just his guts telling us that we should wait for Sony to finally give us this A6500 successor.

Patrick Murphy-Racey:

These are two clips that I got to shoot when testing the new Sony A9 5.0 Firmware in Los Angeles last week. The new tracking feature is already inside the Sony A6400 bodies that will start shipping in February of 2019. This was a test of how the A9 was able to use the new hybrid tracking feature by combining the use of distance, movement, Face Detection, Eye AF, color, and pattern. By using all of these together the AI (artificial intelligence) residing in the camera’s programing is able to see the human body type, pattern of clothing & hair, movement, employ Eye AF and Face Detection all at the same time. This creates a very easy to use and even scary combination of auto-focus. I call it the “Spider-Monkey” AF setting. You kind of have to see it to believe it so I’m posting this video to show what it’s like in real time. There are two clips. Each clip is shown once in real time, and then the same clip is repeated at 45% speed so you can see what the camera is accomplishing. When you see the large rectangle flash, it is me shooting stills at 20 frames per second. Needless to say, I cannot wait to be able to employ the Spider Monkey AF system on most of my shoots once I get hold fo the firmware update again in March!

Tony:

Sony’s new focusing system in the a6400 and (soon, via firmware update) in the Sony a9, a7R III, and a7 III, drastically changes how we shoot. The eye detect focusing feature used to be quite unreliable, but after the firmware update, it’s basically 100%. Subject tracking for sports isn’t at 100% reliability, but it’s better than any camera we’ve ever tested, including the Nikon D5 and D500. This video shows many examples shot through the viewfinder so you can see exactly how the Sony a6400, Sony a9, Sony a7R III, Sony a7 III, and Fujifilm X-T3 perform.

Sony A6400 preorders:
USA at BHphoto, Adorama, FocusCamera, Buydig, Amazon.
Europe at Calumet Germany, ParkCameras UK, Jessops.
Asia at Sony Australia and Sony Japan.

You can now preorder the new Sony A6400 at Amazon US too.

Sony A6400 preorders:
USA at BHphoto, Adorama, FocusCamera, Buydig, Amazon.
Europe at Calumet Germany, ParkCameras UK, Jessops.
Asia at Sony Australia and Sony Japan.

And here we got a new review from Max Yuryev:

Sony A6400 preorders:
USA at BHphoto, Adorama, FocusCamera and Buydig. No preorders yet at Amazon.
Europe at Calumet Germany, ParkCameras UK, Jessops.
Asia at Sony Australia and Sony Japan.

Here are new reviews of thee Sony A6400: