Any age, but I think if your under 18 then your parent account has to turn of age restrictions on things in the store.
No there were only two stimulus and resurgence
Modern Warfare 2 map pack the "Stimulus Package" is out on xbox live. and it costs 1200 MS Points in real money $15 and will be out for PSN on April 30th.
ps3 modern warfare map pack should definite be out may 5th
because you get badd connection.
Stimulus Package, "Resurgence Package" though they are far from being new now
It came out yesterday but for some reason people cant find it anywhere on the playstation network
There is no current release date for the modern warfare 2 map pack.
Buy it in the map pack
march 30th
Rumors say that a map pack will be available either March or April.
The map pack will come out on the 30th April 2010
The new map pack comes out in the spring about may (ish).