My being new to this isn't relevant concerning the fact I'm only mentioning this as part of the "Clarification" relating to this topic of what happens when signing up CC subscription apps (Photoshop) that are closely tied to other workflows using NON-CC subscription apps such as LR that require updates/upgrades that follow different time schedules.
ACR and LR have and, probably, will be kept in sync....regardless of the release of the actual products.
You may want to note the recent announcement of the release candidates.
You have the choice of upgrading or not. If you do not, you are advised to follow the workflow as Jeff, and others, have suggested.