Add the release of the “Star Wars” movie series on iTunes to the list of big things happening for Apple on April 10. A TV ad from Disney and tweets from iTunes confirm SD and HD versions of all six “Star Wars” movies with hours of new bonus extras are available for pre-order in iTunes at $20 each. Reactions on Twitter were mixed, with many complaining that there’s no bundle discount for buying all 6 movies when fans have already bought the films multiple times in various formats. Amazon offers a bundle discount for digital versions of the films that will also be delivered April 10.