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Bill Hunt from thedigitalbits.com reports Original Unaltered SW Trilogy in HD in the works.
Lots of good stuff from Bill Hunt, editor of thedigitalbits.com in this report.
Near the bottom of the article, he mentions Disney is thought to be working on the 1977, 1980 and 1983 versions of the OT for a high-def release. His post is worded in a very non-factual, speculative way, but Bill has credible sources and has been very reliable with news on the video release front for many years. He wouldn't have posted the item if he didn't think it was warranted.
Also in that same link is blu-ray news for the 1960s Batman series, The X-Files and Twin Peaks, among others. Good stuff here.