There are conflicting reports scattered all over the place and at this point there's little factual evidence anything has gone down. However, the gist of things appears to be that the Mavs have dealt Josh Howard to Washington for Caron Butler.
Most reports state that the trade also involves some combination of Gooden, Singleton, Ross, and a trade exception on our side, and Brendan Haywood, DeShawn Stevenson/Javaris Crittenton from the Wizards'.
In my mind, this trade is a huge win for the Mavs , especially the 2nd incarnation. I don't think Butler's a top notch Scottie Pippen for Dirk, but I do think he'd become the 2nd best player on this team, replacing Josh who was more akin to an anvil than an asset. Getting Haywood added to the deal would be phenomenal; he's a solid, starting-caliber center, while Gooden's a subpar power forward miscast as a defense-allergic center.
Does this put Dallas on LA's level? No. Not remotely. But it brings them a hell of a lot closer.