This weekend will see the deployment of Windows 8.1. In preparation I have updated all my drivers and such.
I intend to keep ATI 2013 as long as possible because it has always been a difficult piece of software to upgrade.
From what I've been able to read up until now (just days before the official release or 8.1) I think I can expect the upgrade to work and imaging should still work.
I have the Plus pack version with the build at 6514.
I will be upgrading Windows 8 Pro with Media Center. I don't want to do a clean install - I have just too much software to do that and I didn't have too much trouble with the Win 7 -> Win 8 in-place upgrade so I expect this should be similar.
I will make a system image prior to the upgrade (Win 8) and immediately after the upgrade appears stable (8.1).
Then I will try to restore from that image.
I'll post my results here.
I usually do my system image in Windows 8 (not from the external media Linux edition). I have not had any problems with that process and I've tested it perhaps 4 or 5 times this past year when I needed it.
Backup and validation takes about 15-20 minutes and a restore about the same time, so it's not too bad.
Note: I am not endorsing Acronis. It is a real hassle, but when you get it to work it is reliable - at least for me.
Anyone can browse the Acronis forums looking for my name and you will find many issues that took a very long time to get addressed.
For that matter I don't endorse Windows either. You can browse this forum for my name and find lots of unaddressed issues.
I just use these as tools.