haha
I wish I could say there are things on the horizon, but I'd be lying. I did the bulk of this style when my family were away for 6 weeks and I had LOTS of uninterupted time. Any updates will be incremental and likely as I need them on my own site. Good thing for you guys is I like to keep my site reasonably current, so if something breaks with the base, chances are I'll fix it.
vBulletin 4.0 is a scary prospect though - I'm kinda hoping Jelsoft do their own mobile version! 695 installs (and double the number of downloads on the css which would imply that upto twice as many sites have actually installed this) is a pretty good case for them to do something! It'd be nice to have a code base top extend and work from... If everything is gonna be CSS driven, it shouldn't be a big leap for a professional designer to do