Alone IV: The EWBAITE Years is available in the market.
I may still be adding files to the dropbox folders after they've gone on sale. That means you can re-download the bundle, or the specific files, and get additional content as I discover it. Very cool. To see a current list of tracks available in the Alone IV bundle, click here.
I had no plans to release a 4th Alone album, but my plans changed. I'm (still) finding that old material is very useful for new songs though.