I’ve published the src code of a proof-of-concept WordPress app for BB10 devices here: bit.ly/P1HB0B
I’ve used the WebWorks framework for BB10 (beta2), the bbUI.js toolkit, and a JS library I wrote some time ago for the communication layer. It’s just an experiment, but it looks promising… Ref: http://dev.blackberry.wordpress.org/2012/07/21/bb10-alpha/#comment-997

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If we have time, and with the help from other devs, we could use it as starting point for a full featured native BB10 app, but at the moment the Android porting is still the “Official” app for BB10 devices.