Um, no. The cable being laid at the moment goes from Finland to Germany. A Northeast Passage cable would go from the other end of Finland, along the Russian coast to Japan.
When plans for the undersea link to Germany were unveiled last year, he [the minister] mused that it could one day be hooked up via Finland to another that could run under the Northeast Passage - providing a superfast data route to Asia.
Conceded, more than a data center owner, but "mused" and "one day" doesn't exactly sound like they've finalized their plans.
The route above Russia is too long a route with little or no commercial demand. No financing would be available and there are too many ice scour issues in East Siberian Sea to make this route preferable over the Northwest Passage route.