Jim, Mike has been working on revamping his material and moving everything to a new site. His clawhammer page lists the tabs that he has been reworking, but no new material has been posted yet. Mike may also be looking to tie his tabs to his instruction more closely and charging fees. I don't that is stated on the site (that I have only looked at a few times in the past year or two), but his material is good enough for that. Here's the site:
"After 15 years, I realized that my entire teaching site was in dire need of an update.
All of my tablature files need to be updated to the current version of my notation software (Overture). This will take a LOT of time as I pretty much have to reenter every one of the tabs by hand as the old files don’t open properly in the current version. Example: I just spent six hours updating my version of Bach's "Sleepers Awake”, and that's just one song!
Once I started down THAT road, I quickly realized that there were other ways I could make my clawhammer instruction site much more effective (if not revolutionary). I also realized that I would need a new platform to host my instruction site as I will no longer just provide tablature; each lesson or song will be offered as a “course” with multiple support files (mp3 and video).
Imagine every tab having a performance video, an instruction video, a video discussing how to effectively backup either the voice or another instrument, and an accompaniment MP3 to practice with.
That is the daunting task I am undertaking, but it’s one I am VERY excited about.
I will probably incrementally stage in the new instruction site, so periodically drop back here and check in for progress reports."
He has some progress reports, the latest on June 14th.