Spanish is currently not available in the Consumer Preview. It is available in English, Chinese (Simplified), French, German, and Japanese.
To change your language settings, you should use the new consolidated Language configuration interface in the Control Panel. It is located in the “Clock, Language and Region” category. The language selected during setup – or selected by setup based
on the previous Windows installation – will be listed in this interface. When adding a language, the user does not need to specify whether they need an input or display language (or both). The user simply clicks Add a language to see a list of available languages.
If the user selects a language with multiple available regional variants, the Add button becomes Open. Then the user chooses the regional variant needed, and clicks Add to complete the procedure. Once added the user is returned to the main Language interface
where they can then view options for each language. If there is a display language available for the user’s language and edition of Windows 8, it will be shown as available for installation in this interface.
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