Download Link: http://www.mediafire.com/?g851d8mabyer1un
A quick note on volume 6's booklet - you'll probably notice that the image of Chris in her "XD" Symphogear form is poor quality, with really jagged and unclear lines. I want to stress that this is not the results of my scanning - it's actually like that in the booklet itself. I was rather surprised to see such an oversight on the production, I had to check the 2ch thread to confirm that it wasn't a problem unique to my copy. It's a shame they couldn't have fixed that problem before it's release but I guess it's better than having to return a disk for an error something. Anyway - I hope they release another art book with proper production sketches in the future.
Speaking of artbooks, I have more scans to share! Browsing tumblr I came across someone doing scans of the character & voice book, which is great because I wasn't planning on doing any (esp since the majority of it is seiyuu pics and interviews). You can find them here.