Dynamix' Nels Bruckner updated his .plan with word that the next patch for Starsiege: TRIBES (version 1.9) is currently in QA and should be released soon. Here's the whole (brief) update:

A quick update - the Tribes 1.9 patch that I mentioned a while back (which primarily addresses a server-side crash) took a little bit longer to put together than I had originally anticipated. It is in product certification now and should be available very soon. My apologies for the delay.