There are several other games with this problem too and update delays with many more than only two weeks, for example AI War Fleet Command. You only get the latest update with the integrated updater (internet connection required). It's not up to date out of the box when you install the game with the standalone installers offline.
I already wrote to GOG support some time ago but nothing happened.

I did indeed, thanks for pointing it out. I'm pressed for time right now, so will amend my error later tonight.

I said this mutltiple times but in my expoerience contacting support because of a missing update does not lead to any success. Either contact one of the better mods like Judas (and hope the game is in his responsibility) or/and contact the devs AND publisher directly on forum, on facebook and on steam. I did this multiple time and most of the times I was successful.

Judas changed his privacy settings so you can't talk to him. I informed Pixel Titans via E-Mail and also talked to The Game Bakers about the missing DLC and OST for Furi. No answer from both developers 'till now. Nobody want's to talk and give some answers.

I take it MaGog is not tracking CrossCode (though it was released before it switched to "Legacy" mode)?

Judas has not changed a thing in his settings - look here. He probably just did not realize yet that he should change his settings back to normal. For now try to add him as a friend to contact him. In addition to contacting the devs you should also try to contact the publishers of the game (in most cases they are responsible anyway). Try to do as much of the communication out in the open - meaning facebook since bad reputation there is tarnishing the image of the devs/publishers as well. As I said - it's no guarantee but the chances for success are much bigger than contacting support. Don't give up and do this multiple times if you don't receive an answer. If nothing is helping tell the devs/publishers that you are going to demand a refund, that you won't buy another game from them and/or that you will tell others as well how you are ignored and why they should not be supported. Be agressive but don't be mean or rude. You are a buyer and you have rights.

Nope, is not up to date, so I assume it must have been updated after MaGog starter her refresh.

Curiously enough, GOG's non-Galaxy API has the updated changelog, but notice that it jumps from v0.9.2 (12 June) to v0.9.5-5 (12 July), and v0.9.5-4 (the one posted by Grimlock) is nowhere to be found. So it seems the two APIs have different changelogs for at least this game. Some of us should check if this is only a exception or it happens for many other games. :P

I suppose it tracks just the offline installers, so if an update is only for galaxy it doesn't appear.
Also since the changelog was not updated Magog doesn't pick it.

Edit: A lot more complete explanation by muntdefems in the previous post

Yeah, I know :). I've been seeing them show up for CrossCode, but I always assumed MaGog will pick things up eventually. In fact I'm only looking at games released after the 24th of May to fill out the gaps.

As to the whole situation, I highly doubt it's just a freak occurrence since the website data and the RESTful APIs are not designed to be in perfect sync. We have to expect at least a few things slipping through the cracks no matter how much... ehm, scanning... and surveillance we throw at GOG :|.

i just got a flag for SOMA but have no idea what it was for.

The mac installer got updated for some reason... no changelog yet.

no worries, i am a filthy windows user, haha.

It went from 1.10 to 1.09. Basically, something somewhere got fucked up.