There have been a lot of rumours surrounding these two and their unhappiness on the show.  Katherine committed career suicide when she blamed the writers as the reason for her not getting an Emmy nod.  And T.R. has complained about not getting enough screen time.

Their co-star James Pickens Jr. (Dr. Richard Webber) confirms they are:

“Yes she is” “Wherever Katherine goes, I wish her nothing but the best.” 

“He’s going too,” Pickens said. “He just wanted to pursue other career paths.”

I wonder if either of them will look back on this experience and realize how good they had it?

Will you miss their characters on Grey’s Anatomy?