Thanks, @EvernoteHelps said to ask here :) I just raised a support ticket, hopefully someone will be able to help there, as I cannot think of any other way to reach the developers involved...
Are pull requests on Evernote Windows SDK on github being reviewed at all (https://github.com/evernote/evernote-cloud-sdk-windows/pulls)? Pull request #33 is a bit of a blocker for us and we are trying to establish if there's a chance of a new version of the Evernote SDK on NuGet?