Yes, there are a couple that I know of (now that we are closer to airing)...
~~~Spoiler Warning~~~~
James Frain will be playing Sarek--He is VERY important to the main character, Michael's (Soniqua Martin) story -- and Rainn Wilson is playing Harry Mudd.
But on the whole Discovery advertises new heroes and villains and is exploring @20 Klingon Houses to expand on different cultures on different planets. In addition Michael is not the Captain of any ship, but the series is going to be from her perspective.
http://variety.com/2017/tv/news/star-trek-discovery-rainn-wilson-harry-mudd-1202019986/
