The Linux info refers to the Linux server. There still is no native UNIX style TF2 game, unfortunatly.
Removing the razorback speed removal is FAIL. As a spy, I respect those snipers who choose to have a bit of a speed hobble to force me to be more clever. But to let them have no backstabs AND have no speed penalty is too much. Killing a Razorback sniper requires some pistol/knife jutsu... I fear seeing too many razorbacks on the field now. Instead of being a choice, it's a nobrainer. At least we have Jarate vying for the Razorback slot.
I actually don't like that you can't swap viewmodels whilst on server. I thought it was a very ingenious technique. Although I guess now you can be ingenious in deciding which viewmodel to pick based on maps still.
And the FAN/Airblast knockback reinstallation is FAIL. Spies don't need another way for people to ACCIDENTALLY figure out who they are. Like I said, a spychecking pyro uses flame, not airblast. But a pyro airblasting some crap out of the way can't fail to notice that that friendly Engineer over there got knocked back. And disguises no longer show blood, so shooting somebody and looking for blood isn't enough. But now Scouts can finger spies not by damage but by knockback.
The bugs fixed needed to be fixed, but the other stuff is FAIL.

Pardon my ignorance, but what is this 'viewmodel switch' everyone is referring to?
I like the update for the razorback. They really didn't need a speed penatly on top of the fact that it replaced the Smg
Thanks for clarifying. I always had to use that command to switch back after minimizing the game. Does this mean that alt+tabbing out of the game no longer results in viewmodel switching?
The Ambassador no longer penetrates buildings
It was good while it lasted.It was good while it lasted.
I.e. beforehand, the Razorback was utterly useless and just a crutch for Snipers getting to learn the Sniper and give themselves the illusion of less stuff to worry about. Now it's a somewhat useful way to not worry about backstabs, although the double Revolver pop is still extremely possible and still common on Razorbacks. Still a pretty useless unlock, imo.
As a spy, I will say the Razorback has absolutely saved many a sniper's lives, even with the speed penalty. People complained about the speed penalty because it affected their ability to effectively snipe, not b/c spies were shooting them. Snipers with a Razorback, near a sentry or capturing the cart, will most likely not get stabbed or shot. Lone snipers deserve to get stabbed or shot.
And I've never seen anyone complain about it making it harder to sniper, only that it was harder to Kukri people.