I would think that as people see the difficulty dropping, some will likely take advantage of that and order more GPU's, which would then probably cause a small increase on the next retarget.
Nice logic... I'm sure people are running to add capacity to the network now that it's going to drop 8%... Who cares that the price of bitcoins has fallen like 30% since the last difficulty. You can get more coins now!!! They aren't worth as much as before the difficulty started dropping, but still... More coins!!!