I . Diana Ro s returns to otown­ lock; oc and 'equt y' Di Da R 5 MoftS Back To Moton - Lock, S " Equity Owoer: Mo own Records has announced that Diana Ross is returning to the label both as an artist and equity owner. Ross, 44, who originally left Motown in 1980, was signed to MCA when it joined forces with Boston Ventures to purchase the. label from Berry Gordy last June for $61 mil­ lion. As part of this new agreement, Ross has invested an undisclosed amount into the label, In return, Ross will receive part of the 20% minority ownership stake that Gordy made a condition of the sale. In her partnership role, Ross 'will sit in on Mo own's Advisory Committee, and will also play a part in bringing new talent aboard According to Motown president Jheryl Busby, "she's already come up with some great ideas and concepts." In a prepared statement, Ross proclaimed delight with her new association with . Motown, adding that she was "looking forward to assuming a partnership position as well as an artistic role in Motown." Ross will release an album for the label in May. A 1989 world tour will follow .... Meanwhile, talks with Solar Records chief Dick Griffey, have been suspended. Motown has slated a press conference, presumably to address both the dissolu­ tion of MotownlSolar talks, as well as the Diana Ross an-. nouncement Will E ever truly emerge: Well, according to its magazine's New York staff, the answer is yes. The publica­ tion is now slated to hit the stands sometime this fall, with the original investors still in tow. If you'll recall, it was just three weeks before it's first scheduled launch, last Septem­ ber, Time Inc. backed out when Syndicated Communica­ tions, the magazine's primary investor failed to come up with all of their share. Tune Inc, however, has kept their word to go ahead with the project once the additional backing was found. Ames, bowever,· still working to close