It's difficult to keep track of all kind of new ICBMs that Russia is planning to deploy - in addition to the Topol-M/RS-24 Yars deployment that is underway, Russia plans to introduce a new road mobile missile, RS-26, in 2015 and a new "heavy" ICBM, Sarmat, some time around 2020. As if this is not enough, there is apparently one more system that Russia is working on.
Commander of the Strategic Rocket Forces, Sergei Karakayev, told the press today that five missile divisions are currently working on new deployment of new missiles. He mentioned Teykovo and Tatishchevo, where the deployment of road-mobile and silo-based Topol-M and Yars missiles has been largely completed. Two more divisions are Novosibirsk and Nizhniy Tagil, where the Rocket Forces are deploying road-mobile Yars. But the fifth division is the most interesting.
Karakayev said that in Dombarovskiy, "the work is done on one more missile system". It appears that "one more" means that it is not Yars. It is too early for Sarmat as well, so it is probably something else. My best guess so far is that the work in Dombarovskiy (and we know that there is some interesting work going on there) is related to the work on something "hypersonic". It won't be a new missile, but the payload is likely to be unusual. It is possible that this new system was tested in September 2013 (and maybe even from Dombarovskiy), albeit unsuccessfully.