Hi Bill,
Unfortunately, no. In Remote Utilities paradigm the update process is always "human-initiated" and is under control. If Hosts start to update on their own this may lead to VIewer-Host version mismatch issues in case Viewer is outdated.
We understand that nowadays many apps update automatically but Remote Utilities isn't a single app, it's a dual app. And it dictates some caution when it comes to updating. Especially when a remote computer is many hundreds of miles from the user.