Does the Sentinel software update the favorites list like the EZ scan software updates the Scanlist?
No.
This has been kicked around a number of times. Uniden elected not to force Favorites list updates along with the database, because so many people, including myself, edit their lists to customize, or simplify, the names used. You're a premium subscriber. Set up your "My RR" 'home page' with the counties, trunked systems, and agencies of interest to you. Then, when you initially log into RadioReference, those counties, systems, & agencies that have been updated will be colorized. Green if updated in the past 24 hours, yellow if there was an update in the last 7 days. Quite often, the update is to 'background' details that don't show on the database [age, and make zero difference in how it needs to be programmed. You can ignore the change & move on.
Unless we're talking about a new system just coming into use, or a new user transitioning to an existing trunked system. you might need to take a handful of minutes to tweak your programming for a user or two. While the database updates weekly, I may go several weeks at a time without the need to change any of my programming. That's despite the fact that I monitor over thirty counties, forty trunked systems, and a dozen agencies for my area as well as areas that I occasionally travel to or through.
For EZ-Scan, it only updates information for systems and frequencies that you added via Library Update. If you manually created a system or added items not via the library, those would not get an update.