May magazines with ESB content are hitting the shelves:
Entertainment Weekly: http://popwatch.ew.com/2010/04/08/empire-strikes-back-star-wars/
It's own thread: http://originaltrilogy.com/forum/topic.cfm/Anyone-have-the-The-Empire-Strikes-Back-material-from-Entertainment-Weekly/topic/11430/
Scans via other thread: http://community.livejournal.com/ohnotheydidnt/45777687.html
Maxim : Get Leia'd! Making of The Empire Strikes Back
Vogue (besides the title - don't bother): http://www.vogue.com/voguedaily/2010/02/fall-2010-the-acne-empire-strikes-back-new-collection-inspired-by-star-wars/
(wonder if for exclusive rights to first publication of these pictures is why the Making of Book got pushed back...)
And some oldies:
Time 1980 : http://www.time.com/time/magazine/article/0,9171,924122,00.html