No, they've made many changes, not all for the better. Personally, I feel sound has been broken since last year when they made the decision to tie its permissions to consolekit--I think avahi-daemon might also be a factor.
Usually, if you stick to the default Gnome, it works now, but pulse audio can also still be an issue, at least for me, as I don't use gnome.
I have a page which though dated seems to, unfortunately, still be applicable, at
covering some common issues and possible fixes. Note--do the fixes one at a time and several require reboots.