Heroics are now available.

Furthermore, the Pre-made Character Templates should provide you guys with characters in level 333 Superior (blue) quality gear - which is the minimum expected gear level for succeeding in heroics. I strongly encourage you to copy over a new pre-made if you want to test heroics.

Available character copies should also be reset.

We are looking into the issue with Heroics not showing up on LFD/Dungeon Finder. For now you will have to do it the old-fashioned way by pre-assembling your group and actually walking into the dungeon. Sorry!