We know Windows 10 will arrive this summer, but when? Summer is a pretty open timeframe, but we get it. Windows 10 is far from being a finished product, and needs quite a bit of polishing before it ships. Still, we’d like to know when that might be. Microsoft is staying mum, but AMD may have just told us when Windows 10 will arrive for customers. In an earnings call, AMD’s CEO Lisa Su said Windows 10 will launch at the end of July.