When I chatted with Microsoft just prior to Windows 10's launch, they did mention that like Xbox One, the Xbox App will also get monthly updates.
A small t or casual shirt equates to a 36-inch chest. Casual shirts are small, medium, large, or extra large. A dress shirt is identified by the neck and sleeve measurements; a small having a 14-14 1/2 inch neck and 32/33 sleeve length unless you are especially tall, then it might be 34/35.
Adult T-shirts : Youth T-shirts: Size: Width: Length : Size : Width: Length: Small: 18: 28 : X-Small: 13: 17.5: Medium: 20: 29 : Small: 15: 19.5: Large : 22: 30 : Medium: 17: 22.5: X-Large: 24: 31 : Large: 18: 24.5: XX-Large: 26: 32 : XXX-Large: 28: 33