Minecraft wiki entry for Redstone_Update, associated text: The Redstone Update is the name for Java Edition version 1.5, a major update released on Wednesday, March 13, 2013. Among the main changes were a number of new redstone-related blocks, including the comparator, hopper, dropper, daylight sensor, trapped chest, weighted pressure plates and block of redstone. A new decorative block – block of quartz, crafted from nether quartz – was also added. Also included was a scoreboard system, a new texture pack format and a lighting engine optimization.