Mandalorian wariors are where Boba and Jango got thier armor/jetpack suit, just in case anyone isn't familliar.
On one of the FoC screen shots, it can be seen that the planet Mandalore has been added to the GC map. Additionally, that screen shot shows the Boba Fette hero unit in orbit above one of the planets (he's on the Corrupt side in stead of Empire, apparently). The interresting part is that this screen shot ALSO shows a non-hero mandalorian warrior in the unit stack on the surface of the planet.
From the looks of things, the corrupt side have received some very interresting combat troops indeed. Those units would make a nifty counter to the flying variant of the dark troopers that the empire will be getting in the expansion.
Here's a link to the picture, courtesy of IGN:
http://media.pc.ign.com/media/827/827314/img_3596833.html)