When using the summon command
/summon x y z {TileX: x, TileY: y, TileZ: z, Direction: #, Item: {id: "ID"}, ItemRotation: #}
one can only specify the ItemRotation by 0-3.
0 = Right-Up // 1 = Right-Down // 2 = Left-Down // 3 = Left-Up
(You can also use 4-7, 8-11, etc. but that will do the same as 0-3.)
There is no way to let the Item in the Item Frame be rotated up, right, down or left.
Only checked for 14w06b, 14w07a and 14w08a. Possible that the bug already existed before 14w06b.