Telefonica has the exclusivity on the Palm Pre in Europe. As Mexico is not part of Europe, another carrier had a chance there – and it looks like Telcel made the run.
A batch of Youtube videos which have since been pulled by their creator showed the following:

The narrator furthermore claimed that the device would have expandable memory, which however has not been confirmed…
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Videos
http://www.youtube.com/watch?v=wbEkAxTbEvg
http://www.youtube.com/watch?v=jLgXH4EzoeA