Microsoft has released a fourth community technology preview (CTP) for the next version of its Visual Studio IDE, currently codenamed 14. The third CTP came out about a month ago. Improvements in the latest CTP include better. NET vNext tooling, tweaks to the debugger, and Peek support in the XAML Editor.
At the same time, the company released a new CTP for TypeScript 1.1, a Microsoft programming language that offers an alternative to JavaScript.