Minecraft wiki entry for Development_versions, associated text: MC-10679 – Hopper cool-down is messed up.
MC-10694 – Piston arm passes through other piston.
MC-10731 – Hoppers facing one another are inconsistent.
MC-10778 – Slowness 127 and Speed 110 together flip view.
MC-10825 – Using /clear on more than 1 player will stop clearing inventories once an empty inventory is encountered.
MC-10826 – /me cannot use @p correctly.
MC-10889 – Updated redstone bug (detectorrail).
MC-10900 – "/scoreboard teams empty teamName" error message says "%s" instead of the team's name.