From Wikipedia:
"In 1995, an alternate version of the special was released to VHS as a special mail-in offer with Kellogg's to tie in with the last video and laserdisc releases of the original versions of the Star Wars Trilogy. This version is almost identical to the 1977 version but replaces William Conrad's voiceover with that of famed movie trailer announcer Don LaFontaine. This version has not been issued on DVD nor any other format."