With a new controller, Microsoft just took a big shot at Facebook and Sony in the race for cheap virtual reality (MSFT)

This holiday season, Microsoft and Acer are teaming up for a $399 virtual reality bundle — containing Acer's $299 Windows 10-powered virtual reality headset, along with brand-new motion controllers made by Microsoft specifically to control VR apps and games. 
There's one big question, right off the bat: Apart from apps like Netflix or the Edge browser that are already listed in Microsoft's Windows Store, we don't know what games or other software will work with the headset. It's