http://www.pcgamer.com/the-latest-wolfenstein-2-the-new-colossus-dlc-is-out-now/

The second DLC episode for Wolfenstein 2: The New Colossus released earlier today, in the form of 'The Diaries of Agent Silent Death'. As the name implies, it traces the adventures of protagonist Agent Silent Death (her real name being the comparatively benign Jessica Valiant). 

Much like the first episode in the Freedom Chronicles series, this is its own self-contained campaign, albeit a comparatively short one. Unusually, Machine Games and Bethesda haven't (yet) released a trailer for this one, so we've only got the Steam screenshots to guide us. This description is helpful: