According to the recent comments, the three PDF releases for UA that had been planned has now been shelved:
Regrettably, we ran into some issues in the editorial process. To make a long story short, these projects are now on the back burner indefinitely. :( Sorry.
Sad news. Yes, the Unknown Armies line is thankfully complete as is, but some more surreal weirdness in the UA mode would have been a good thing.