As you might have noticed already, when going into the inventory screen it says "1" as in number of other weapons available on the same spot, also, there is room for at least 1 more weapon on the weapon exchanging screen.
Will there be 2, or maybe even 3 updates for each class? :O

I think ideally that's what they're going for, but whether or not the game is alive and kicking long enough to get all of the things out that they want will remain to be seen. Don't get me wrong, it's a great game... but at the pace they're going with updates, could be a loooong time.

Yeah, lets hope thats what they will end up doing.

I kinda agree, but after they'll finish with all the updates it'll sort of be dead, don't you think? what else could valve put except for new game modes or maps? TF2 has a great gameplay and community but that's just about it, maybe they should make more co-operative mission maps, like, I don't know, zombie survival fortress XD.