For those of you that don't know, Tf2 is now free. Go get it.
Additionally, they've spent the last week adding the most
22 new weapons across 8 classes.
7 hats
2 misc items
2 action items
And 8 new "sets", Though only in so far as they're a collection of items, as they offer no "set bonus".
What I'm going to do is go through each of the updated classes, the new items they've received , how those items work in a "set", and possibly even suggest a set bonus myself, though mostly for luls.