A New Tivo Model or Another Tech method?

Elsewhere, TiVo is also working on a non-CableCARD approach with Comcast that would enable TiVo’s retail boxes to access the MSO’s full linear TV lineup and its VOD service. The companies have not announced the technical path they are taking, though Comcast has been pushing hard on an IP video transition - See more at: http://ift.tt/1Jy2ppf

For tivo to eliminate use of a CableCard on Comcast systems would it need a new model TiVo or could this be done with the existing Romeo models?

I'm still waiting to upgrade my Premiere units (I also have Comcast). Don't want to pull the trigger if a new model would be needed for this non-CableCard approach.

Any thoughts from the tech-knowledgeable members?

Thanks,

Rick