[i.h]

According to Sky's webpage about the BBC One Upgrade in England. Here is an example of what the Nightlight static caption will look like from January.



The list of Sky boxes in SD affected by the SD  switchoff are listed here in this webpage. 

www.sky.com/help/bbcupgrade

EDIT: This BBC Upgrade page from Sky's Help section is for the UK only. It does not work for me in Ireland. If you type BBC Upgrade in the search box. The article which has the title "BBC local programming switching to HD only"
refers to BBC One Nightlight. Hope this helps.

That link redirects to the Sky Help homepage, although this works for me…

www.sky.com 

Good to see that Sky appear to offer a free upgrade to Q - they seem to have been reluctant to shift people off of customer owned equipment (except when the Thomson HD boxes needed to be swapped since they weren't going to get a major update). I can't imagine there are that many subscribers with SD boxes anymore anyway.