I wonder if it wasn't supposed to be in there yet. There was nothing in the release notes stating it was added. Remmeber when Crazylevi played the video mode on the pre release code but it was added for quite some time after the release. My guess it's in the .91 and .92 code because they are working on it behind the scenes but it is t ready to be fully added so they fixed that and removed it out of .93 until it's done.

I cant comment on how frequently, but yesterday i got lightsaber dual from matching the pop bumpers which i thought was interesting.