It's generally bad form to name an age while it's still going on, but I will say that we're going to be in trouble if we keep downgrading out metals. What'll be left for the 2070's? The Tin Foil Age?
There are a few big trends in the last decade: Big cosmic threats. (See Authority, Infinite Crisis.) Super serious anti-heroes in leather. (See Authority, New X-Men, Ultimates, Supreme Power.) "Realistic" explanations for super powers. (See Authority, Ultimates.) Revisiting classic continuity with revisionist, modern take. (See Identity Crisis, Secret Invasion, Planetary sort of, but sadly not the Authority.)
Defining writers of the last 10 years: Grant Morrison, Warren Ellis, Geoff Johns, Warren Ellis, Brian Bendis, Warren Ellis, Mark Millar, and that guy who created the Authority.
An iconic "modern superhero" RPG campaign would probably involve a juxtaposition between edgy modern heroes, the "good old days" that turn out to be a lot more complicated than you would have thought, and a huge menace that ties the two eras together.
(So far my effort to push the industry back towards
Giffen-DeMatteis-esque hi-jinx and pathos has been in vain.)