First up for this month, we have 60 degree floors. These line up with the square tiles, because they are exactly 2, 3, 4 inches per side. They can be used for creating y intersection, and hex (or portions of a hex) shaped room.
Grab the files
Attached here
In the OpenForge Dropbox under tiles/dungeon_stone/wall_on_tile/floors/floor*60° and bases/plain/60°