@rzr said: As this is my first time installing these update candidates, Actually we moved first batch of packages that landed in testing to candidates repo, to avoid mix up in the second batch that just landed in testing repo. Since nothing new appeared in candidate you should probably already had them before, home this is clarifying what is actually happening Next yum update should just pull the latest stable versions? Not if you already have installed then from testing (or candidate) repo, because versions are same, it's only the distribution channel that change, no impact for testers. I'm not sure what you understood from @scarfantennae's question, but that we moved packages from xcp-ng-testing to xcp-ng-candidates doesn't seem on topic here. The question is: "now that I've applied this update candidates from the testing repositories, am I definitively in testing mode?". The answer is: no, because: The --enable-repo switch only applies to the two commands you ran: clearing the cache and applying updates. The repositories remain disabled by default, so yes, next time you update you'll only get stable updates if there are any. Either the exact packages that you installed will be pushed as official updates (in which case there will be nothing for you to do), or we'll push newer updates that will supersede them automatically next time you update. Hope it's clear.