TWC9: Power BI Q&A, Azure Machine Learning, IE Dev Channel and more

This week on Channel 9, Brian and Dan are back discuss the week's top developer news, including;
Picks of the Week!
Hi,
I have created a VS 2014 CTP2 VM in Azure. But it does not have the Roslyn compiler enabled.
Alas, I only have access to the VS Professional SKU in my MSDN subscription.
Is there a way to enable Roslyn in the VS Professional or is it available just for the Ultimate edition?
Thanks for your superb show.
Eduardo Quintana
Hi Eduardo,
Do you mean Visual Studio "14" CTP2? (There's no release date yet, so we're calling it "14" -- which is the major version number of VS.) The Roslyn compiler is certainly enabled in Visual Studio "14". Actually, there really isn't a way to disable it. In Visual Studio "14", the Roslyn compilers are the only C# and VB compilers.
That said, many of the new C# and VB language features are not available by default. We're still working hard on them and you have to make a small tweak to your project to enable them. Just add <LangVersion>experimental</LangVersion> to your project file and the new language features will "light up" and be available to you. There's more information about this here.
Thanks!
Dustin Campbell
Visual Studio Managed Languages
Hi Dustin,
Thanks for your reply.
Yes VS 14 CTP2. I added the <LangVersion>experimental</LangVersion> to my project file and the new language features do not appear to be available and are reported as errors when I try to use them.
That is why I have added this posting originally.
Eduardo Quintana
Hi Eduardo,
That doesn't sound good! Would you mind filing an issue on Microsoft Connect? On the feedback form, be sure to specify Visual Studio Professional "14" CTP 2 for the Visual Studio/.NET Framework Tooling Version.
Thanks!
Dustin Campbell
Visual Studio Managed Languages