News AMD B850 Mini ITX motherboard with PCIe slots on both sides teased ahead of Computex

You guys seem to really want to tie this to "BTF", which it is not and which the original source doesn't appear to mention AT ALL. It's just a ITX board made for a particular chassis, the "A4 ITX", which the source mentions but does not show.

Can't think of any model names at the moment, but I feel like I've definitely seen cases where the GPU mounts behind the motherboard and there's a wraparound PCIe riser. Seems like this is an offshoot of that, but rather than relocating it to create two airflow zones they're putting everything in line so the case can be thinner.
 
I was wondering when someone would eventually do this.
If you look at the orientation of the wifi antennae nubs, you'll see that the rear slot is at the top, which is perfect for a sandwich layout. This would reduce the need for a long riser cable and may help with signal integrity.

If you're ever wondering why PCIe 5.0 has signal integrity issues, AFAIK, it's the outdated (22yr old) connector.
Servers use long PCIe cables with a modern slim connector.