More information has been uncovered regarding the Brock Lesnar/New Japan story, mainly to clarify what is currently going on. Here's the latest.
While New Japan has not officially announced Lesnar as working the 10/8 Tokyo Dome show, Masahiro Chono has talked about it publicly, most notably earlier today at an airport he was at waiting on a flight to Germany. He also showed a contract with Lesnar's signature on it, which you can view pics of the document by clicking here.
The Lesnar/WWE lawsuit regarding the no-compete clause until 2010 is still ongoing, which makes this situation that much more complicated.
One would assume if he follows through, Lesnar probably isn't making the wisest decision, all things considered.