I'm surprised you said that about Hopunion packaging.
Not sure what you mean there... the OP was questioning whether the new packaging eliminated the need to keep hops cold, which I don't think it does. Hops should still be kept cold.
From Hop Union's site:
As with all of our products, quality is our top priority. Each of our home brew packages is carefully packed and sealed in a nitrogen flushed, light resistant, oxygen barrier N2 HopPackâ„¢ and then stored in a temperature controlled atmosphere to avoid heat related degradation. This packaging system ensures that every package of Hopunion hops is maintained in an ideal storage environment.