So many new tools were used in making this first. First, note that I used filters with the Canon 17 TS-E even though the 17 has that bulbous front element and doesn't have any filter threads. I adapted a spare 17mm lens cap and glued a Lee 82mm wide angle adaptor ring to it, as described here. I managed to get a few millimeters worth of shift and managed to get a few degrees of tilt without much vignetting (the vignetting you see in the image was added by me in post). I also managed to get multiple filters without vignetting. The lack of ability to use filters was the biggest complaint I had with the 17 TS-E. Though, this solution isn't perfect (there is heavy vignetting if more than a few mm of shift) its definitely does help a lot.
The second new tool used is the newly announced Nik HDR EFEX Pro 2. There has been some major changes to the user interface in this new version I like how I can get non-destructive tone mapping with their Photoshop plugin.