Star Wars Rebels theory

 Last night, I was checking wikipedia to see when when Star Wars Rebels comes back (answer:  June 20th! Only a week!) I ended up browsing the character listing.  I...don't recommend this, as it spoils the fates of several The Clone Wars characters that I don't think has been mentioned in any promotional materials or tie-ins yet.  I did notice something though, that may or may not mean anything.

( Spoilers for The Clone Wars and Rebels season 1 and season 2 trailers )