Over two years on from the game's release, every Team Fortress 2 class save the Engineer has received a major update. Does that mean, then, that there's only one major update left in the game? No way.
In an interview with Team Fortress 2 community site Community Fortress, Valve's Robin Walker has said "We've got multiple updates in the works still, at least one of which will land before the Engineer pack. As always, we haven't planned too much out beyond that point, because we want to see what feedback we get from the community."
Multiple updates, but only one for the engineer. If this isn't the most exhaustively-supported game out there, I'll eat my Heavy's fluffy hat.
Robin Walker on Competitive TF2 and Future Updates [Community Fortress]