CTAM’s Char Beales says attendance for this year’s Summit (July 18-21 in Boston) is tracking a bit ahead of last year. "We feel like were on target for 2400. We feel very good," she says. The assn announced Mon that Philips Consumer Electronics vp, biz innovation Julia Langley will join Insight’s Michael Willner and HBO’s Chris Albrecht as a keynote (Langley has been working closely with cable’s retail initiatives). Also on tap is a Torie Clarke-moderated genl session with Time Warner’s Glenn Britt, ShopatHome’s Judy Girard, Bear Stearns’ Raymond Katz and Rainbow’s Josh Sapan. CTAM’s adding more how-to marketing panels this year, a result of its decision to fold its Digital conference into Summit. — Rainbow pres ent services and Summit co-chair Kathy Dore tells us her folks have secured Jackson Browne for Mon night’s festivities.