I just got an order in from FW and it came in a GW-style blister. If someone else has posted this before, very sorry -- but the change is new to me. The item in question is the Eldar vehicle upgrade pack. Last time I ordered it, it came in a little plastic FW bag like everything else.
If the rumors about FW items being sold directly in GW stores are true, the change to blisters would make sense.