This issue is a variant of 4001 A.D. (Valiant Entertainment, 2016 series) #3 [Cover A - Clayton Crain]. There exist further variants.
Retailer Incentive Variant 1:20
Interlocking Cover with 4001 A.D. #1G, 2F, 3F, 4F; 4001 A.D.: Bloodshot #1d; 4001 A.D.: Shadowman #1D; 4001 A.D.: War Mother #1E; 4001 A.D.: X-O Manowar #1D; Rai #13E, 14D, 15D, 16D
Story continues from Rai (Valiant Entertainment, 2014 Series)#14 (June 2016) and in 4001 A.D.: Shadowman (Valiant Entertainment, 2016 Series)#1 (July 2016)
Interview with Fred Van Lente about the new Generation Zero ongoing series.