Can I change the Windows 8 Pro language after buying a PC? [duplicate]

Yes you can! This represents a change from Windows 7.

You can change the language by

From the charm search bar search language and choose Settings
In the Language Control Panel, tap or click Add a language
To make it a display language move the panel to the top of the list. For example, move the spanish panel on top of the English panel.

See the official kb.

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--edit-- Wikipedia says these features should be available in all versions; with the exception of exotic Chinese only versions.

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