The NPB withdrew their provisional disposition against Dentsu earlier today. Commissioner Ryozo Kato and Seibu Lions' owner Takashi Goto are scheduled to meet with Dentsu officials on 12/27 in order to discuss a continued partnership.
The NPB is preparing a new system to handle their data beginning in 2013 and wanted to sign a one-year extension with Dentsu, but the deal was turned down because it was only a one-year extension (Dentsu apparently does not like one-year deals). The NPB initially filed a provisional disposition against Dentsu in October that sought a one-month contract for December, but later changed it to request that Dentsu hand over all past data.
Concerned that the league might not be able to properly handle data during the 2012 season without the help of Dentsu, Kato withdrew the provisional disposition today.
Dentsu has been helping the NPB keep track of its data (game results, team and player stats) since 1998. The collected data is shared with various organizations (news organizations, software developers) and brings the NPB about 700M yen a year in revenue.