thats not what a sky manager told me yesterday when i called to discuss my subscription, to cut a long sorry sort there doing tests on HD channels now moving them one by one, should all be done by end of June/July, SD will also be all off by end of year, all the white boxes can be upgraded free of charge when they start to migrate over to new system, but again you have to sign the multiroom subscription for a 12 month contract (separate to the main subscription).
i was on the phone to a sky manager discussing all sorts yesterday, i was trying to get them to reactivate me on the old system. but i was told it is not possible as it is hardware dependent. thats why the need for new boxes. in the end i cancelled my subscription.