coffeecup: 10 updated games jumped on me, but after some browsing on GOG and a single lgogdownloader --update-cache without anything downloaded .. the flags ... vanished?
If you've been doing downloads from the update notifications posted here, as I have, you probably already had most or all of the flagged updates. Only about 5 of my 20 updates were actual files I still needed to get.
On an unrelated note, did I hear the whistle of the Judas Hype Train coming around the bend? Could it be pulling into the station tomorrow, or is that just wishful thinking?