I'm so excited for the ROSEANNE re-boot coming March 27th to ABC! From what I've read, the show is pretty much going to ignore the last original season of the show that aired in 1997 where the family won the lottery and Dan died.
The entire original cast is back except for Glenn Quinn who played Mark who passed away in 2002. As far as Johnny Galecki who played David...Johnny obviously has a busy schedule as LEONARD on The Big Bang Theory but he has been confirmed to appear in one of the eight new episodes!