ecoRoute future compatibility with more Nuvi units???

Hi All,

Does anyone know if Garmin plans to make the "ecoRoute" software available, for more Nuvi units?

Presently ecoRoute is only supported on these Nuvi's:
Nüvi® 205-series
Nüvi® 705-series

I currently own a Nuvi 670 & 880.

Thanks for your time.

Regards,

Tailspin

Nüvi 670 & 880
Mac Pro & OS 10.5.4