StarWars.com has posted a news item confirming that the two existing trilogies will be released as Blu-ray/DVD combo packs on October 8, 2013. The new sets will "feature brand new cover artwork created exclusively for this release."
The two sets are available for pre-order now on Amazon.
These sets will only be available in the United States, but international fans will be able to pick up DVD-only versions.
Star Wars Trilogies Set For Re-release As DVD/Blu-ray Combo Packs
7/9 - Jimmy Smits
7/11 - Greg Grunberg
7/12 - Ben Burtt
7/13 - Harrison Ford
7/13 - Star Wars Celebration Europe (2007)
7/14 - Kristy Wright
7/15 - Forrest Whitaker
7/15 - Celia Imrie
7/15 - Star Wars Celebration Europe (2016)
7/18 - TROOPS (1997)
7/19 - Star Wars Celebration Japan (2008)
7/19 - Mark Capri