ProIV have been saying for a long time that they were going to release the bootstrap file definitions (ie without signing a NDA).
I didn't actually think they would do it though...
The version 6 bootstraps for VIP & Native are now available for download in the partner area on ProIV's website.
And not only are the bootstraps available, but they also come with documentation!
What the hell's going on? 
It's a revolution !!!!
But seriously, and this goes to all you newbie programmers out there - so apologies to the vets who already know this - BE VERY CAREFUL if you write tools/utils that write back to the bootstrap files i.e. Add, Change, Delete
....and back up the files prior to running any mass amendment and TEST, TEST and TEST again
...otherwise the phrase 'all the rope you need to hang yourself' comes to mind