The funny thing is, they are there nearly since release of BC2. They are activated on the server side via special command line switches and by EA maintainers of the master server to let you edit the filters according to the "new" maps. This also applies to the "release" of the SPECACT kits - they are already there but not ready for the masses. That's why there were some "hacked" servers which allowed you to use them and even get achievements. As soon as they fix their crashes (as they say) the switch will be set to properly use them (after you paid for it).