What does Digit Four look like on Microsoft?

On Microsoft it is the design shipped in Windows 10 Anniversary Update, shown above at full size. Older revisions are listed beneath it.

When did Microsoft add Digit Four?

Microsoft first drew Digit Four in Windows 8.0, released 2012年10月26日.

Microsoft Corporation has shipped 4 versions of Digit Four. Each is dated, so you can see when the design changed.

Microsoft

Microsoft Corporation has drawn Digit Four 4 times. Every revision Microsoft has shipped is below, newest first.

What does Digit Four look like on Microsoft?: On Microsoft it is the design shipped in Windows 10 Anniversary Update, shown above at full size. Older revisions are listed beneath it.
When did Microsoft add Digit Four?: Microsoft first drew Digit Four in Windows 8.0, released 2012年10月26日.
How many times has Microsoft redrawn Digit Four?: Microsoft Corporation has shipped 4 versions of Digit Four. Each is dated, so you can see when the design changed.

Microsoft artwork for this emoji spans 2012 to 2016.