No, 3; Jarate, the Razorback, and the Huntsman.
It was a double update, for the Sniper and the Spy. There has, however, been a Classless Update recently. It brought hats.
Each TF2 update comes out whenever Valve thinks of ideas, so just be patient
It is unknown as of yet.
Sniper part
It isn't said but thought to be in his 40-50's
its already out =P NOT FOR 360 *angryfaic*
Yes, have a look at the TF2 Wiki for exact information.
No, because the 360 isn't updated to the Mann Conomy update.
They are designing a "training" mode for each class.
yes, in fact, headgear was added during the first tf2 update, though there wern't many, valve has been adding more and more ever since and now its become a strong icon of tf2
Haven't played Sniper: Ghost Warrior, but TF2 is amazing and now that it's FTP there's no reason NOT to play it.
The End of the Line update came out on December 8th, 2014.