That's kickass artwork! I like both films, so a double feature is great.
And Blu-ray too? Shit yeah! My guess is that it'll just be a two-disc set: one Blu-ray and one DVD disc, each a dual-layer with both films on each disc. Perfect combo solution.
"The good thing about science is that it's true whether or not you believe in it." - Neil deGrasse Tyson