Haven't seen this on BBM's website yet, but AmiAmi's had a listing for a couple weeks for a new box set for the annual Premium Malts old timers game. It's a 54 card set with 53 cards for the players and coaches and one insert card of some type. The rosters for this years game include a lot of the same players from last year (including Isao Harimoto, Koji Yamamoto, Osamu Higashio, Randy Bass, and Shinji Sasaoka) plus some new ones like Yutaka Enatsu, Choji Murata, Suguru Egawa, Norihiro Komada and Shigeki Sano.
AmiAmi's got the set priced at 3383 Yen (roughly $40) which I personally think is a little steep for it. Supposedly it'll be out in late September.
Update: BBM still doesn't have anything up on the set, but Discount Niki does. The insert cards are apparently possibly either jersey or autographed cards. Looks like they have the release day as September 30.