Yes, as long as you have the .csproj for your app, you can deploy directly from your instance of Visual Studio to the phone. This is the same for anyone with an unlocked phone, which developers can do by registering at the marketplace. In order to unlock
a phone, you will have to pay $100 to register at the marketplace. We do have offers through DreamSpark that makes this free.
There are quite a few devices which have made their way to developer's hands, but the demand has way outstripped supply. Based on your URL, I am guessing you are in the UK. If you want to send me a note to my work email (brwatson [at] microsoft) I will
make sure I get it to one of our field champs in the UK.