We've added some some new kinds of fences and slabs and such. One of the new slabs acts a bit like a pressure plate and breaks when something heavy walks over it. Radiant Grass is back! It can now grow when placed next to dirt and still gives off light (like it did in 1.7.10). Several other changes.
Detailed change logs for the 1.9.4 to 1.10.2 version are kept at: https://www.reddit.com/r/DruidryMC/comments/4uagbu/194_druidry_progress/