I think it is the rate for banks keeping funds with the central bank. That effect still trickles down to customers just not directly to deposits afaik.
Interesting piece of the article:
"Jessica Hinds, an analyst at Capital Economics, said further rate cuts and bigger asset purchases could be expected in response to a rising krona as a result of the European Central Bank's measures to stimulate inflation.
Swedish daily Svenska Dagbladet called the announcement "extraordinary" as rate changes are traditionally made public after the central bank's monetary policy meetings."
So, they'll have to keep cutting as the Euro devalues and probably do so unexpectedly. The Swiss certainly shocked the markets by letting their currency appreciate wildly just a few days after vowing to maintain the peg....