My analysis of the rumored specs -
First, a foreword. These specs are likely very, very close to what will be. This is based on trends, logic, and the conservative nature of upgrades and Canon, not the wishful thinking of consumers.
<li>24.2MP Sensor</li>
This sounds right. 28MP is too high for what will be a wedding pro's workhorse. Or any event shooter. 24mp is already a lot of data for a wedding pro shooting 1,200 - 2,000 photos per event. It's a nice bump in resolution. It is a nice sweet spot. Gives space for buffers, accommodates speed, doesn't fill up cards too fast, doesn't slow down workflow - and plenty of resolution for cropping and printing huge albums. Also, gives more flexibility for low-light performance.
<li>61 AF Points (41 crosstype)</li>
This is probably dead on. The 1DX2 got the same AF system, but with better programming/processing. Likewise, the 5D4 will have the same points and types, but with improved sensitivity and processing. I hope it is also -3EV.
<li>DIGIC 7+ (Single)</li>
ok
<li>7fps</li>
This is realistic. Makes it fast, but not quite a sports camera. I was hoping for 8. That would have made it fantastic and that is the best compromise in that no, Canon isn't doing to give anyone a FF camera that can suit the speed needs of most which could undercut the 1D series, so 9 or 10 is out. 8 is fair. 7 is the most modest increase possible, a little stingy, but realistic.
<li>ISO 100-51,200 (expandable options)</li>
1 stop more native ISO. To be expected. Almost mandatory. We hope that it's not just 1 stop better, but cleaner, no banding or weird stuff, and more dynamic range. If the 80D is any indicator, the sensor on the 5D4 is going to be excellent.
<li>3.2″ touchscreen LCD</li>
Not sure this is any good unless the camera also has DPAF.
<li>CFast/SD card slots</li>
CFast is good move. Progress is important. CF is dead, old standard. Surely, many will whine and cry who have a pile of expensive CF cards. That's just the way it goes. Need faster standard to clear buffers.
<li>Wifi built-in</li>
This is nice, and a real possibility. Hopefully it supports the fastest wifi standards for file transfer. Better yet, USB3 or USB-C tethering.
<li>GPS built-in</li>
Not sure why this would be included? This is a feature best suited for the 6D and 5DS - cameras enthusiasts, travelers, and landscape shooters prefer.
<li>BG-E20 battery grip</li>
Ok.
<li>LP-E20 battery</li>
There is nothing wrong with the current battery, making this move is just to milk consumers out of more $$
<li>Slight weight reduction</li>
This is always welcome.
Not mentioned ---
4K and DPAF.
Maybe we get one and not the other as to not make this too powerful of a video camera? That would be very Canonesque in style for sure.
CFast with only 7fps tells me the CFast is all about 4K. Otherwise, it is a useless advancement.
DPAF is great, but goes hand in hand with touch screen.