1) You can now specify the TFS server's cache as part of the install. So you are able to put it on a non-system drive
2) Looking at the upgrade process there were a couple of hints, and I finally tracked it down in the test area… It would appear that you are - or at least will be able to share parameters across test cases -- very cool…
You will also notice that web access is looking a lot closer to Visual Studio Online
Wonder when the application insights will become available on-premise