Alec Saunders, who I admire for his vision, wrote (again) a great piece on the future of presence information in telecom industry. He presents a new presence model:

“New Presence is a user-centric view of presence.  Instead of merely reflecting the crude, device specific “availability awareness” of today, New Presence systems understand our context, relationships, wants and desires.  The New Presence model reflects the integrated conversation web we live in today.”

The New Presence Model:
presence model