I’m not too surprised Sky have decided to make Sky Arts FTA, not only does it expand its reach but with BBC Four becoming more of an archive channel, it’s filing a gap nicely. Sadly I think it means that Challenge will likely leave Freeview
At risk of sounding ungrateful - will it be an HD channel?
It'll be SD only, keeping the HD service for Sky subscribers to encourage you to pay...
Alas, I live in flats in a conservation area, so it's nigh on impossible to get a Sky dish. I know other options are available, and I probably could upgrade my NowTV account to HD to get it, but I like being able to record. I suppose that's supposed to be another thing to tempt me to sign up properly.