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Get it while it's hot, remember to get Marianas you have to go into Module Mgr and manually select it to DL.
The regular update was just a couple GB, Marianas was only like 5GB more.

Thanks for the heads up! I'll do this before dinner.

Steam version, I had to go into steam> DCS > DLC > Manage DLC and tell it to download Marianas map.

It did not download on its own through the update today

server is updating