Answering my own question, from FAQ
"Once the AIP Unified Labeling add-in for Office has reached retirement following the 12-month period, it will be removed from the Download Center package – leaving the other components of the package as-is. Over time we will rebrand these other capabilities under Microsoft Purview, and we continue to recommend using these to cover your labeling scenarios outside of Office apps."
I just want to know what to look for in the future if we need to push the viewer. Will ot retain the same package name ir maybe be renamed to AIP Viewer. You mention Purview, so might be some Purview Viewer or so. I understand that this might still be in the air. It just can be confusing what to use when after 1 year if you don't follow every blog and bit of information from MS religiously 🙂 i also don't have access to M365 portal, but am responsible for software deployments to endpoints, so trying to stay informed in advance.