What happened to the project to get it cancelled? By the way- you can get two sets of each armor if you download Jeremy's quests AND the Ultimate Knight Shop mod! Great if you use mannequins and companions!
I'm quite sure he planned on releasing all the armor (technically they were finished)... but life happens, priorities change... could be any number of reasons.
I avoid his quests mods... very buggy and poorly designed IMO, but his armor is defiantly some of the best classic armour, and I'm thankful for the ones he did finish.