U.S. State Department released New START aggregate data from the last information exchange. The numbers are current as of 1 March 2012.
According to the release, in March 2012 Russia had 494 deployed launchers, 881 total launchers, and 1492 operationally deployed warheads. In the previous data exchange, current as of 4 September 2011, these numbers were 516, 871, and 1566 respectively.
Most of the drop in the number of deployed launchers and warheads is explained by the Ekaterinburg submarine's entering overhaul in November-December 2011. Some ICBMs were probably decommissioned as well.
The increase in the total number of launchers is a bit harder to explain. Most likely, these are new mobile RS-24 Yars launchers - at least nine in Teykovo (six began service in December 2011 and three more launchers wer expected to enter service shortly thereafter) and probably some in Novosibirsk, where they are expected to begin service later this year.