In an interview given to Izvestia, published today, Yuri Solomonov, the former chief designer of the Moscow Institute of Thermal Technology, claimed that the industry "supplied the military" with the "first combat unit" of RS-24 missiles at the end of 2009. Solomonov complained that this event went unnoticed and indeed it was - there was no word about RS-24 for quite some time.
The Rocket Forces reported about deployment of a regiment of Topol-M missiles in Teykovo in December 2009 - if RS-24 was deployed, that would be it. Another possibility is that the missiles were delivered to the Rocket Forces, but were not deployed for whatever reason. This seems unlikely, but on the other hand, some reports discussed deployment of RS-24 as a distant goal.