4 Tiles on Surface Homescreet

I turned on my Surface RT today and there were four tiles in a column in each of the sections of my homescreen. What's up with this? There was a firmware update that I ran, and when it rebooted, I was back to the standard 3 tiles. Has anyone else experienced this? Is there a setting somewhere that I missed that lets me determine the number of tiles that I want to display in a column??? Any help would be appreciated!!!!!