If you clicked on the Glenn Erickson link in the above post, you should avoid doing so again, because his latest review of the new Ignite set (so many options, so little time!) is 90+% cut-and-paste...the description of the upscaled ultra-HD disk is the same word-for-word as in the review for the 2013 Olive blu-ray...

But he does give us a much better sense of the extras in the set...read below for that info.

(Note--the Arrow disk in 2017 that Glenn references below was originally in a 4-disk set that also included The Dark Mirror, The Secret Beyond the Door, and Force of Evil).

We’re aware of two previous discs of The Big Combo, a 2000 Image DVD and a 2013 Olive Films Blu-ray. Neither had any extras for this core Noir title. Ignite’s audio and video features tap top names in the field. The Film Noir Foundation’s Eddie Muller provides a text intro, and Imogen Sara Smith checks in with a highly informative commentary. Other input comes from film director and critic Scout Tafoya (a video essay, an essay on The Crooked Way), writer, teacher and film programmer Geoff Andrew (a video assessment), Katie Stebbins (on the crisis of poor Susan Lowell) and Alonso Duralde (on the private lives of Fante and Mingo). Critic David Cairns handles an expressive, incisive video essay on director Lewis, whose nickname was ‘Wagon Wheel Joe.’ Cairns’ piece, and that of Geoff Andrew, came from a 2017 Arrow disc of Combo, which we hadn’t seen.