There's nothing wrong, it's just an update that covers lots of small files, so it's very slow to deploy, because every new file must also be purged from the cloudflare cache, and this is a slow process.
The reason for the message is to prevent users from starting an update when it's not safe to do so (while a new one is still being uploaded), which is an obvious improvement to the previous version, where you were supposed to check the release notes and don't update until you see the updated ones. Now, the updater itself is taking care of that, so you are no longer supposed to know that, and you won't risk starting an update when it's not safe to do it.
