I have mixed feelings on this one.
If Disney can do what they did with Marvel (The Avengers, etc.) for Lucas Film, then we might be in for some really great Star Wars movies. If they pull the crap they do with some other movie franchises, then the continued downward spiral of the franchise shall continue. I do think that Disney will do wonders with the Indiana Jones franchise, but it's not like the standards are that high after the last one anyway.
As for the new Star Wars movies, I think that they planned on doing the ones that come after the original three; however, I wonder if they'll keep with the stuff from the Lucas Film-approved Expanded Universe or not. It wouldn't turn out very well if they try to fit movies in between any of the current ones, especially if they tried to keep with the main characters of those movies.