I’ve been able to confirm information about one cast member for the dub of the Stitch! anime.
 

 
Pleakly, played by Kevin McDonald in prior Stitch media, has been recast, as I’ve been able to confirm known LA area ADR actors used in Studiopolis anime Dubs have tried out for the role.
 
With Pleakly being replaced, it seems likely that Jumba Jookiba will also be recast (he was played by David Ogden Stiers in other material.)
 
No news about Stitch himself. If I get further information I’ll let everyone know.