One of the hallmark differences between Microsoft’s new CEO Satya Nadella, and his predecessor Steve Ballmer, is that Nadella understands how to make a deeply symbolic gesture. While Ballmer relied on shouting ‘Windows’ very loudly, Nadella has produced a series of turn-ups designed to convince the world that this is a new Microsoft, not just a new CEO with a snappy if vague motto (mobile first, cloud first). The first was to release the new mobile Office for iOS before Windows itself; the most recent is to jump straight from Windows 8 to Windows 10. There may have been pragmatic reasons for that (too much confusion with previous releases with ‘9’ in them, like Windows 95 and 98). But Nadella…