Funimation just put up a Facebook post confirming two roles in an upcoming simuldub.
Monica Rial and Jason Liebrecht will be reprising their roles from Tsubasa Reservoir Chronicle in the simuldub of Clear Card (Sakura and Syaoran, respectively). This has got me thinking; will any other CCS-linked roles in Tsubasa be voiced by the same English VA's in Clear Card? I've been browsing through ANN's English cast listing and have come across five such roles.
I'm extremely doubtful about Amber Cotton voicing Tomoyo; her list of voice credits doesn't include any recent titles. Jim Foronda voicing Sakura's father is a bit less doubtful considering he voiced King Toma in Fairy Tail. However, Sakura's brother Touya (Eric Vale) and his friend Yukito (Robert McCollum) are very high on the list of reprisal possibilities. Lastly there's Kero, who only appeared in one episode of Tsubasa; he was voiced by Chris Cason, so that's another reprisal possibility, although slightly less probable than Touya and Yukito.