The music has been updated, but it's no better, if anything it's worse. I'd recommend you keep it turned off. Defuse kits are now buyable and you can buy helmets and Kevlar separately too.
There is just over four hours until we give away our remaining five CS:GO beta keys, so get in on that as quick as you can. In the meantime, have a read of yesterday's first impressions article.
Lastly, weapon changes to existing guns include these accuracy shifts, where the lower numbers meaning more precise firing:
AK
"InaccuracyFire" 10.30 -> 8.59
Bizon
"InaccuracyFire" 4.32 -> 3.60
"RecoilMagnitude" 21 -> 18
AWP
"InaccuracyFire" 64.62 -> 59.23
"InaccuracyFireAlt" 64.62 -> 59.23
Deagle
"RecoilMagnitude" 50 -> 37.50
M4A1
"InaccuracyFire" 10.24 -> 8.53
"RecoilMagnitude" 26 -> 23
(Also made tracers visible again, was off since last update)
MP7
"InaccuracyFire" 3.27 -> 2.73
"RecoilMagnitude" 19 -> 16
Nova
"InaccuracyFire" 14.57 -> 12.15
"RecoilMagnitude" 146 -> 143
SSG08
"InaccuracyFire" 27.50 -> 25.21
New wpnmodel also.
UMP45
"InaccuracyFire" 5.12 -> 4.27
"RecoilMagnitude" 26 -> 23