Garritan, volume 9 is now available. It seems like it was a little late this year, but it will surely be worth it.
Garritan produces "virtual music instruments" - software for reproducing the sounds of musical instruments without the musical instrument. I'm doing a poor job of describing it, but it allows you to create music without physical instruments. I suspect this is mostly for the entertainment industry, for cases where you might want a soundtrack but not hire an entire orchestra.
Anyhow, each year, they put together a Christmas album of music created with their software and then they give it away. You can download this year's music here. (It's mostly instrumental, but in the past few years some artists have added vocals as well.)