Soyuz TMA-17 docked on 22 Dec 2009 at 22:48 to Zarya FGB nadir port with ISS-22/23 on board, adding to Maksim Suraev and Jeffrey Williams. Maksim is still keeping his Orbital Log (link in my blog links to the right).
There was a post at the Mars-500 Livejournal blog (in Russian) that a Chinese volunteer might be included in Mars-500 (replacing one Russian volunteer).
From 15 to 18 December 2009 a meeting was held between IBMP specialists and Chinese Cosmonauts Training Center (KTSPK). The meeting was devoted to discussing issues related to the possible participation of Chinese experts in the project “Mars-500”. As a result of the meeting was agreed on the possibility of inclusion in the scientific program of the 520-day isolation in the framework of the project “Mars-500” three scientific methods. In addition, discussed the possibility of inclusion in the crew of a Chinese volunteer.