When this weeks CentOS Stream 10 compose was pushed out, the
CentOS-Stream-GenericCloud-10-latest.x86_64.qcow2
image disappeared.  Some people who investigated noticed that it was just the image, but not the MD5 and SHA sums.

Q: Is this disappearance permanent?
A: No.  There was a bug.  We will get the images back in our next weekly compose / release.

Q: Why did the original one go away?
Koji was updated, and three of our images started failing. They would build correctly, but koji would fail tagging them. This was OK for a while because "latest" just kept pointing to the latest successful image. Eventually the image got too old and our cleanup script removed it.
Details can be found in this bug/issue:
https://issues.redhat.com/browse/CS-2959

Q: When will the original one come back?
They should come back on Monday's (July 28) compose and release.

Q: What is the difference between the two x86_64 qcow2 images?
The original (without the extra x86_64) is our original Bios only image.
The one with the extra x86_64 boots using EFI

We, the CentOS Stream team, apologize for the inconvenience that has caused.