We've been seeing the iPad / iPhone Spirit jailbreak
demoed here and there
for a few weeks now, and here we go -- the download is now available. The untethered jailbreak works on activated iPhone OS devices running 3.1.2, 3.1.3, and 3.2, although iPad owners are warned that "all this is still sort of beta" and might require you to restore if things break. That's not the worst thing in the world, we suppose -- anyone taking the plunge?
[Thanks to everyone who sent this in]