Just when we thought RIM was just rehashing the same old promises at Lotusphere, it turns out they’re previewing a BlackBerry Client for Lotus Connections. Lotus Connections is social software for business, kind of like an enterprise Facebook. It lets you share bookmarks, set up profiles, and organize projects and communities, but for now the handheld will just let you access profiles and shared bookmarks. Still, it’s some pretty impressive software, and anyone cruising around Lotusphere today or tomorrow should swing by booth 516 to check out the new app in action. For more info, head over here.