Heavy confirmed to be the next for tf2 update pack.

[Elv02]

From the Valve Blog(http://www.teamfortress.com/):


"...the next class pack will focus on the Heavy. For the Medic and Pyro packs we kept our goals for the pack pretty close to our chest, but for the Heavy we've decided to open up the process a little. Our hope is that you'll get a better insight into how we approach design problems, and have some fun thinking about the problem yourself..."

Looks like we won't be seeing it for awhile though due to some design issues...