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.
A long, form-fitting undershirt with a deep V-neckline ... Men's Tommy John 'Second Skin' Deep V-Neck T-Shirt, A long, form-fitting undershirt with a deep V-neckline streamlines your look with Tailored StretchÂ® technology, ensuring that it stays tucked in. The silky, lightweight fabric adds comfort and is cool to the touch. 28 length (size Medium). Non-pilling. 90% micromodal, 10% LycraÂ® spandex.