It's hard to look at Apple's new "Liquid Glass" aesthetic and not think about Windows Vista, Microsoft 's much-maligned OS which also touted transparencies and glass-like effects as a bold new vision for computing.

Microsoft wakes up and joins the Liquid Glass fun-poking party, being six millionth in line to point out that Windows Vista got there first.

Microsoft has officially poked fun at Apple's Liquid Glass UI overhaul by sharing images of an old Windows operating system version.