NFC MicroSD Card and other OS's / Phones

Is it possible to develop my own device drivers for the NFC MicroSD card?

- Is the T80 the only phone currently available?
- Are other Windows CE phones planned?
- Are other non-windows CE phones planned?
- Does the microsSD card come with its own API? That is, if I wanted to communicate with the card using other operating systems (nokia series 40, series 60, palm) could I write my own drivers to access the card, without using java?

I appreciate that you have created a J2ME with the appropriate JSR's implemented, but I am interested in lower level interfaces.

Kind regards