Nope, they released the middle piece the night/early morning that the game premiered, but quickly replaced it with the pin. The middle pieces were only available for a limited time, so they're pretty rare now. Last I heard, people were pretty sure that the middle pieces weren't supposed to be released at all.
Although I <333 WDW and have never been to DLR, I think it's fair that DLR get SOMETHING after having VMK Central taken away... I only have ONE middle piece from that accidental release, so I have a weirdly shaped, not complete sub.... and a bunch of pins and fronts and backs.