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New Look for Triss and New Quest: Scavenger Hunt Wolf Armor not showing up in list of DLC available for the game on Steam.

This have anything to do with the website down time or what?
Update. They are still not showing in the Steam client.

However, if you go to the steam website in browser, you can download from there (via the client bootstraper option).

Links are here:

http://store.steampowered.com/app/378641/?snr=1_5_1100__1100

and here:

http://store.steampowered.com/app/378640/?snr=1_5_1100__1100