It's the D-Stance 1/72 resin kit that @wmkjr posted a link of.
I personally don't like the fighter mode of the D-Stance, it has a "too elongated" nosecone/forward fuselage.
I'm very biased towards the Yamato 1/60 YF-21, but I agree, it sure could have bigger feet and more tampo. Other than that, and although it's from 2008, it's a great toy.
I dig the looks and proportions form that HM YF-21 prototype, but the YF-21 is a design that does not translate very well into an incredible posable toy. The arms will always be hindered by the huge wings/backpack.
But you can do much more than standing poses with the yamato YF-21, it has the same amount of rotation at the waist as the YF-19 DX.
Since the YF-21 is my alltime favorite VF after the VF-1 I do want to see a Bandai DX.