Leap Partnership, as expected, has filed a registration for an initial public offering with the Securities & Exchange Commission (AA, June 3). Filing under the name Leap Group, the 2 1/2-year-old Chicago agency reports 1995 profits of $700,000 on revenue of $8.2 million. It hopes to raise more than $40 million by going public. Leap's filing lists Anheuser-Busch as a client, citing an unidentified TV project. Leap resigned its Miller Lite Ice account in December, accounting for almost $6 million in revenue, so that it could pursue other beverage business.