Yes, the rumours are true, the new Borknagar drummer is Baard Kolstad.
Baard was also presented as the new ICS Vortex drummer just last week and I already saw some speculations drawing the correct lines in here.
Baard is a bit younger then the rest of us geezers, but his entry into the music scene is quite amazing. Baard was “discovered” by Mr Vortex himself in the spring 2011 while recording in Toproom Studio with a band. Just after this both Borknagar and ICS Vortex were asked to participate in the anniversary recording of Metallica’s Black Album, and as Asgeir Mickelson was unavailable, Vortex called up Baard and asked him to play on the song.
Baard has a very well visited Youtube channel which I don’t think needs any explanation, just enter and have a look for yourself; Baard Kolstad Youtube
The last achievement Baard did was to win the World Championship in v-drums arranged by Roland in January 2012, have a look at this video:
And you can watch his winning performance here: