I’ve seen an English-language text of the original Interfax story “No contract signed yet with Russian strategic missile makers”.
Solomonov is reported to have said.
"We are manufacturing the missiles. After the tests were carried through, including flight tests, none of the missiles have been reworked. The first batches were made on schedule. We have been manufacturing these missiles according to plan, accumulating them.”
This stockpiling of manufactured missiles was a result of several factors: "First, the testing of the missile system has not been completed. Second, there is no place to deploy them in the absence of submarines.”
He referred to “the possibility of fitting [the lead boat] out with an entire set of missiles, so experimental-combat operation of the combat unit could begin in 2012.”
I’d interpret the above as meaning that newly-manufactured missiles earmarked for deployment were being stockpiled with the aim of having enough missiles to fully equip the boat by early 2012, but not as implying that the full number of rounds needed had been built.
But obviously I don’t know what version/translation of the story Jane’s was using and whether it differed from the version I’ve seen.