It looks like Nike SB is planning to release newer versions of our favorite SB Dunk colorways like the Iron SB Low and now the Nike SB Dunk Low Grit 2.0. Set to release in Spring, these Grit 2.0’s features just about the same colorway, along with the new Nike SB build that was introduced earlier this year. The Nike SB Dunk Low Grit 2.0 adds on to the list of many colorways for 2012. Via NSB