Blizzard has a tendency to leave old games to rot. Example, Diablo is rotting in the wake of Diablo II, and WarCraft II died to WarCraft III. I don't expect WarCraft II or Diablo (one) to be updated ever again.
Anyhow, I'm going to work on Warden, as soon as I get the willpower to install IDA and StarCraft on my laptop, as well as OllyDbg. And I've been at that point for about a week now.
I don't know about DRTL, but I do know that the last patch for W2BN is final. It said so in the patch notes.