Seen today at Müller in Hilden: Studio Series Voyager Optimus Prime from the Bumblebee movie. No sign of Rampage. Unfortunately, that apparently means that just like with the Deluxes, we skipped Voyager wave 4 (ROTF Starscream) and wave 5. I as able to get wave 5 Optimus Prime from Amazon, but he's a solid case shipment, and there is no official listing for hiw wave-mate Bonecrusher. Also available at the same store: Bumblebee Energon Igniters Power Series Ratchet.
Nice, hope he gets here too soon. I almost forgot Rampage is in the same wave. Our Müllers are totally empty of new TFs, save for Botbots. Though it has been a while since I checked. We did get this wave's Deluxes in Galaxy though, so I expect the voyagers to follow soon.
Looks like it took you a few more weeks to finally track him down. Germany Transformers Sightings I also found him at Müller in Dortmund: