They had a guy from Spike TV on the Forcecast this week, discussing the Star Wars movies on Spike TV and he gave a few more details of their plans.
Prequel Trilogy airing nightly starting next weekend (TPM on April 4, AOTC on April 5, ROTS on April 6)
Original Trilogy airing nightly starting the following weekend (ANH on April 11, ESB on April 12, ROTJ on April 13)
In May, they will have "Star Wars Sundays", with one movie each week (actually may start the end of April)
In July, they will have a "Fourth be with You" promo, showing the movies.
Additional airings at Thanksgiving and Christmas (an all day marathon on Christmas Day was mentioned)
Just wanted to pass that along - I'm looking forward to have Star Wars on "regular" TV again.