[cheekyangus]

I can't see VM wanting the expense/hassle of introducing new software and only making it available to new boxes when the existing main equipment (i.e. V6) is capable of using it.

I find it hard to see them not updating V6 to Horizon. And then presumably any new (non-Mini) box will be used for new customers and replacing original Tivo models that can't be updated to Horizon. Every TV customer would then be on the same OS with minimal additional expense/hassle.

The NTL and Telewest boxes were basically on the same software, all that happened was they changed the logo and colour scheme when the VM rebrand happened.