Zune Developer Mystery

So despite there being some apparent non-disclosure gag in effect, iLounge is adamant that Microsoft held a day-long meeting with developers on Monday to show off a ‘not bad’ flash-memory-based Zune and a beefier (screen and storage) zune.

My questions are… why was it a day-long event and why developers?  Does this mean some kind of SDK or Silverlight on a Zune could be a possibility?  I certainly hope so.

MS could conceivably release developer information without specifying specs or price and could even provide an emulator (like the Windows mobile emulator) so is this developer news or not?