There was a really nice gatefold Laserdisc edition that contained both versions of the movie, but to the best of my knowledge the 1942 version of My Sister Eileen has never been on DVD.
Exceptional lineup for me too! My Sister Eileen is one I’ve waited a long time for. And more Monroe, Hayworth, and Mills! And at least with Twilight Time we know we will get the proper 4.0 soundtracks on the the two CinemaScope pictures.