Welcome to this week's podcast where Jason, Richard and I catch up on the Microsoft news. We ask where Redstone 4? Discus Redstone 5 and sets. Talk HoloLens, Windows Mixed Reality, Microsoft Linux and lots more.

· New video claims Microsoft have sold 50 thousand HoloLens so far

· Tubecast launches VR YouTube app for Windows Mixed Reality

· Windows 10 Redstone 4 to be called "April Update"?

· Windows 10 Redstone 4 build 17134 hits the Slow and Release Preview ring

· Video: Hands on with Windows 10 Redstone 5 Build 17650

· Microsoft releases Windows 10 Redstone 5 Build 17650 for Skip Ahead

· Redstone 4 for HoloLens updated to build 17134

· Windows 10 Redstone 4 build 17134 is rolling out for Windows Insiders

· Surface Pro 4 update adds supports for on screen Surface Dial

· Video: Hands on with Windows 10 Redstone 5 Build 17643 including Sets with Microsoft Office

· Microsoft release Windows 10 Redstone 5 build 17643 for Skip Ahead

· HoloLens Redstone 4 Preview updated