Now there's the second patch for IV-VI, and another patch for I-III.
Both not here! What's going wrong with the gog platform?

Are you sure the games are outdated? The remasters of 1, 2, and 3 seem updated. Patches for 4 and 5 were released yesterday. Give it some time; it should be available on GOG soon.

Unfortunately, gog won't do anything on weekends.

I think last time it took a week before we got the patch.

Sometime next week then.
Although GOG probably are going to have their hands full with gamescom-related things.