-- WWE plans to have The Undertaker wrestle once or twice this year, with one of the matches taking place at Survivor Series. Some believe he will also be at RAW's 1000th episode but that is not confirmed by any means.
-- Rey Mysterio has been cleared to wrestle from his 60-day suspension for the past two weeks, but has not appeared on television. Mysterio was told he would return on this week's RAW, but is instead being held back for the 1,000th episode.
EWrestlingNews
It'd be nice to have a Taker appearance outside of WM season, as for Rey, understandable why they want to hold back his return as WWE continue to stack Raw 1000