EXTENDED TO DECEMBER 15, 2011: You can order The Kerberos Club (FATE Edition) for $10 off at arcdream.com.
The revised second printing is now shipping. It doesn’t change anything really substantial in the rules but incorporates a lot of errata and tweaks the layout in a place or two.
If you have the PDF (and if you have it in print, you ought to have it in PDF too since it’s free to print customers) that should be the revised version. The current PDF filename is Kerberos FATE v7.pdf.
If you bought the first printing, you can upgrade to the revised edition for only $10 plus shipping and handling. Go to the store page for instructions.
Curious about The Kerberos Club (FATE Edition)? Ask about it here.