They look good to me!! Sad the other idents didn't last a bit longer, they could have easily been used for a few more years! My only criticism is that the Challenge logo at the bottom takes a while before it is shown on the screen - so the recorded announcement is finished and over before Challenge actually shows up. I think it could have been put on screen maybe a few seconds earlier?
What about Challenge Text? Has that been updated with the new logo too? Personally, I'd prefer if that reverted back to Sky Text as it used to be.