Mid-range Sony "HuaShan" tipped for 2013
With the Sony Yuga and Odin having model numbers of C660x and C650x respectively, the HuaShan appears to be a mid-range device based on its lower model number. That thought seems to be confirmed by the 5MP camera on the back of the model, which was responsible for the photo on Picasa. All three models are expected to launch first in Asia followed by a European release and then possibly a release in the U.S.
source: Picasa, XperiaBlog via AndroidAuthority