Also, this note from another thread is probably the key point for everyone to read on timing.
Roon will release the core update after they see that the App stores (particularly Apple) have released the remote apps. Roon will see that the 1.8 remotes have become available on the App Store at the exact same moment that we consumers do. They are just as much in anticipation of this as we are. This particular fact is the bane of marketers & PR firms globally. And I actually think from Apple’s perspective it’s a feature, not a bug.