It wouldn't be a day ending in y if there wasn't at least one Nikon rumour floating about.
Here on this continually updated Nikon rumours page, you'll find the latest hot gossip, information and rumoured specs on what camera is likely to be announced.
Nikon has been through a very active phase of camera announcements, with almost the whole SLR range being refreshed.
First came the Nikon D800 and D4, both of which are likely to have long shelf-lives, in early early 2012. Then came the Nikon D600 in September 2012, followed by the D5200 in November and the D7100 this February.
This just leaves the venerable Nikon D300S and D90, which we are told are still current and have not been replaced by any of the newer cameras. At the moment it's the replacement of the D300S that is creating the majority of Nikon rumours.
Nikon D400 rumours
It's getting on for four years since the D300S made its debut, so it seems very likely that an upgrade is imminent. However, this means that there's been at least two years of rampant speculation about its likely spec, so let's examine what's likely.
First off, the D400 would assume a position at the top of the DX (APS-C sized) sensored cameras in Nikon's line-up, which should set it apart from the newer D7100. Nikon classes the D300S as the entry-level model in its professional camera line-up, so we expect the same of the D400.
The benefit of a DX camera is that it can be smaller and lighter than a full-frame model, which makes it appealing as a second body for pros carrying a full-frame lump like the D4.
In addition, the 1.5x focal length magnification factor allows tighter framing of distant subjects, making it a popular choice with sport and wildlife photographers.
Nikon has had a phase of significantly upping the pixel count of its SLRs, with 24 million being the most common figure. It seems likely that Nikon could stick with this for the D400, but give it a greater burst depth than the D7100 and thus turn it into a better choice for keen sports and wildlife photographers.
Perhaps we will see a return of 7fps as the maximum continuous shooting rate, with a boost to 8fps or more with a batterygrip?
We suspect that the 1.3x crop that was introduced with the D7100 may also feature in the D400, giving photographers an in-camera cropping mode for tighter composition at the shooting stage.
It also seems likely that we will see the Multi-CAM3500DX AF module being used with a total of 51-AF points across the frame.
If the D400 is to be a pro photographers back-up and the darling of wildlife photographers, perhaps it will also be the first Nikon camera to feature Wi-Fi connectivity built-in. As well as allowing wireless transfer of images, this would enable remote control of the camera via a smartphone or tablet app.
Wireless remote control allows you to get great images while you are a respectful distance from timid wildlife.