While digging around in the 2008 Live Framework CTP I found evidence of a new WHS device type, in addition to the typical PC, Mac, and mobile device types.  Who knows if that's still in the plans though.

 

In regards to calendars, I found evidence in the 2009 "non-CTP" from a couple months ago that they are adding calendar and photo sync support.

 

Like CKurt says, we should expect more information in the MIX time frame (in about 2 months).