I've been sitting on this information for several months, but since word is now making its way across message boards (including our own Ongoing Discussion), I'll confirm:

The Lord of the Rings Symphony is set to record this February in Luzern, Switzerland with the 21st Century Symphony Orchestra and the 21st Century Chorus. Additional details are yet to come, including conductor, soloists, release date, and format. But the wheels are in motion!