So I hadn't download all of the pdfs (I got the full one and the chaos one) and was going to download the tyranid onee but when I go to the link, well...

[url]https://www.warhammer-community.com/2017/04/01/shadow-war-armageddon-pre-order-and-downloads/[/url]

Error 404 – All Records Expunged from Library
Sorry, the page you are looking for does not exist or it may never have existed.

Looks like we'll either have to hunt them down across the internet, wait for the release of the new book and/or hope they re-upload them after the stand-alone release.