After years of converting to Widescreen and now that CNN and Russia TV have recently gone Widescreen, according to what I've just checked, there are now only 3 remaining Channels on Sky that need to convert to Widescreen...
044 - Nick Jr.
112 - Daystar
310 - CCTV News
Obviously this relies on the Feeds Sky are getting and the source programming.
*This is a technical comment only, not about the content / whether anyone watches these channels!