http://www.theverge.com/2015/1/20/7852969/microsoft-windows-10-event-preview
Xbox and PC gaming
"That should be the main focus of Spencer’s participation on Wednesday. While Microsoft can’t match the power of Valve’s Steam service, realizing the potential of cross-platform play and bringing Xbox Live to the PC in a way that makes sense could help, alongside an improved Store to access popular titles and indie games. Microsoft has long promised games that let you play on a phone, and then resume on a console or PC. Pitting Xbox One gamers against PC players in the same game could be an option, but Microsoft now has the infrastructure to enable true roaming games across phone, tablet, PC, and console. We're expecting to see some of that on Wednesday. imagine playing Xbox One games on your Windows PC, or buying a single game that you can play on your PC or Xbox One and the game state syncs alongside achievements and Xbox Live integration. Wednesday could hold lots of possibilities for gamers, but a commitment to PC gaming will be a key part."
Is a VR headset on the way?
Microsoft will also be participating in the Game Developers Conference in March and E3 in June, so don’t expect all the details on the company's plans for Xbox One on Wednesday.
Microsoft also continues to work on a VR headset, codenamed Project B, and it's possible we might see some hints or an early look at the company's progress with its new Xbox hardware on Wednesday. Microsoft may also detail its plans to bring Xbox Live cross-platform to iOS and Android, but the Windows 10 event timing makes that unlikely.
New hardware
"We’re expecting the company to
unveil its new version of Perceptive Pixel, the large touchscreen displays that are powered by Windows. Microsoft has always pushed the idea of
huge interactive displays, and its vision of the future video from nearly two years ago envisioned a future where sensors and giant screens dominate.
The next version of Perceptive Pixel could be where Kinect is revived, as Microsoft has been working to integrate the technology into its large displays for a couple of years now. Expect to hear how this combines with Windows 10 with a large touchscreen designed for office workspaces."