On top of that, as long as they haven’t officially adopted the new policy, it can be fully complete and they wouldn’t have to provide it.I'd expand on the earlier comment and suggest legal wasn't yet ready to release the in-process documents even if 99% mature. They released what was enough to satisfy their obligation to fulfill the request from you. If they release a new statement or doc in a day/week/month it in no ways reflects on what was provided to you. Companies supersede policies with new ones all the time.
I don't think what was provided to you is indicative of there not being a more stringent policy in the drafting phase.
If it is complete but they decide to have it take effect (or begin the required notice period) on Oct 1, they wouldn’t have to provide it as the official policy in July.