The uninstall mechanism for apps is also in place. When you press and hold an application's icon you can pin it to the start screen, rate and review it for the Marketplace or uninstall it. You'll no longer have to find a dedicated uninstall screen on the device or in the Marketplace app.
The phone dialer UI has also made some progress. XDA Developers has a number of screen shots of screens now available, including the dialer interface, call history and more.
Time is running short for Microsoft to meet some of the rumored release dates we've heard for some of the devices. Q4 is the timeframe we've been told devices will ship and you have to assume that Microsoft wants devices on the streets in time for the holiday shopping season. Back it up from there about three to five months which is about how long it has historically taken device makers to get the final build of Windows Mobile, put it in a device and complete carrier testing, and you are into the June or July timeframe to wrap it up, which is just 60-90 days away.
You can get more information on the Windows Phone Developer CTP at the Windows Blog, including a download link.