I hope the 30th anniversary of JEDI contains such an announcement. This has been the quietest anniversary year for the franchise in ages, at least when it comes to merchandising and collectibles related to the Lucas universe. Hasbro and many other manufacturers have no announced plans to recognize the anniversary of JEDI with any new and special releases (unlike the 20th, 25th and 30th anniversaries of the other two films in the Original Trilogy), so it'd be very nice indeed if Disney and Lucasfilm took advantage of the date and made some grand press announcement about Episode VII and the cast.
Do something Star Wars
related, even if it doesn't have much if anything to do with JEDI.