Stopped by the Toys "R" Us in Wilmington to see if Metroplex was in-stock. Sadly, he was not.
Buuuuut, they did have a couple more pleasant surprises there: Platinum Edition Grimlock versus Bruticus [!] and Ultra Magnus. They also had Construct-Bots Optimus Prime versus Megatron and Soundwave (didn't check to see what others they had). They still have Generations: Fall of Cybertron
Frenzy & Ratbat, Eject & Ramhorn, Rewind & Sundor, and Ultra Magnus. Prime
Vehicon, Kup, Rumble, Bumblebee, Wheeljack, and Knock Out were there too. One Masterpiece Soundwave and several Acid Storms were there too.