I don't see much purpose in ridding some of the old-themed icons, like the phone icon with the mid 1900s handset. It's part of history, it's iconic. There's currently absolutely no reason to recreate new iconic symbols. It just creates confusion and harms an ideal globally recognisable set of symbols. It's important to remember our roots, we all know lots of history, and that's because it's an important subject of our species. As a species, we've made so much progress, and until the objects we use that feature as symbols radically change, then there's no reason to alter them. The phone still has a speaker at the top, and a microphone at the bottom. The icon is still relevant and will remain so for the next 50 years.
As for the keyboard-press sound, I see no problem with it. I do prefer the lower pitched Windows Phone keyboard-press sound though.