Deputy minister of defense Yuri Borisov, told RSN radio that the Sarmat development program is well on track and the first tests of the missile (pop-up tests from a silo) will take place in 2015. The missile, according to Borisov, will be ready to begin service in 2020, as planned.
Borisov also suggested that the missile will be able to "deliver payloads" of up to 10 tonnes, fly over the South Pole, if necessary, and overall being superior to the R-36M/SS-18 line of ICBMs. At this point is is difficult to tell if these claims are correct, but none of this is technically impossible. Whether it's reasonable is another matter.