CVG is now confirming that all DSi-only software/downloadable content are indeed region locked…

“DSi software (software that is only compatible with DSi) is region locked, eg: European DSi software can only be played on European DSi consoles,” a Nintendo spokesperson has told CVG.
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“DSi is region locked because DSi embeds net communication functionality within itself and we are intending to provide net services specifically tailored for each region. Also because we are including parental control functionality for Nintendo DSi and each region has its unique age limit made by different independent.”

Universal DS software, as well as web browsing and photo sharing will remain region-free.

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