That's actually my very old habit for writing a decimal, which I don't even remember the reason for. "3.1" is just "I changed sooth deck to soothsayer's deck".
That said, though, I'm absolutely intending to update cults to the new look, possibly with some new magic, and might also polish off the "crews" add-on I have half-written (old revolutionaries groups who think the republic is a half-measure, not a success).