Howdy Scurvy!
I am sure I have explained numerous times what the changes to v6 are. The mechanical changes are very simple and take about two minutes to implement.
The mechanical differences in Version 6
1) Apply the Silver Rule to all factor totals, not just factor totals less than 20.
NB. Previously, Factor Totals above 20 were supposed to simply subtract 3 rather than apply the x0.833 Silver Rule modifier.
2) Challenge Rating is no longer CR x2 = EL +4, its now CR x2 = EL +8.
NB. The minor added confusion on this is that its balanced to 3.5E Spellcaster Classes (which are more powerful), rather than the Martial Classes*. If you wanted to use a party of solely 3.5E Martial Classes then either change to my revised classes (using those as a guide to do the ones I haven't fixed) or use CR x2 = EL +6.
*See my website for Revised Martial Classes which bring them up to balance.
Immortality
The hold-up on any new v6 document (aside from my general apathy on the matter) is basically one of nomenclature. In effect changing all the terms so that the whole thing isn't confusing, so that 'Challenge Rating' isn't mentioned in place of the arbitrary numerical 'Factor' that eventually gets turned into Effective Class Level and subsequently Challenge Rating.