Internet Explorer 8 may have just been released in 25 languages in Microsoft’s Download Center, but other languages and availability through Windows Update and Automatic Updates will be coming soon.

The release will be in 3 waves as follows:

Wave 0 – Languages
Arabic, Chinese (Hong Kong), Chinese (Simplified), Chinese (Traditional),Czech, Danish, Dutch, English (US), Finnish, French, German, Greek, Hebrew,Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese (Brazil),Portuguese (Portugal), Russian, Spanish, Swedish, Turkish

Wave 1 – Languages
Bosnia (Cyrillic), Bosnian (Latin), Bulgarian, Catalan, Croatian, Estonian, Hindi, Latvian, Lithuanian, Macedonian, Romanian, Serbian (Cyrillic), Serbian (Latin), Slovak, Slovenian, Thai, Ukrainian, Vietnamese

Wave 2 – Languages
Albanian, Assamese, Basque, Bengali (Bangladesh), Bengali (India), Gujarati, Indonesian, Kannada, Kazakh, Konkani, Kyrgyz, Latvian, Malay (Brunei Darussalam), Malay (Malaysia), Malayalam, Marathi, Oriya, Punjabi (India), Tamil, Telugu, Uzbek (Latin)

And the release dates for each wave are:

Microsoft Download Center
Wave 0 – March 19, 2009
Wave 1 – Week of April 20, 2009
Wave 2 – Week of June 1, 2009

Windows Update
Wave 0 – Week of March 23 (for Beta / RC users) and Week of April 13 (for all other users)
Wave 1 – Week of May 18, 2009
Wave 2 – TBD

Automatic Updates
Wave 0 – April 27, 2009
Wave 1 – May 5, 2009
Wave 2 – June 24, 2009

Thanks to Tech ARP for the information.