Just watched it back on iPlayer Live Rewind. It looks like the old graphics template was used but with some colour palette changes - maybe the new graphics palette applied to the old graphics?
Main graphics were removed at 13:08 but other graphics remained including the old BBC News box right at the end of the bulletin right up until Reith returned.
Here's the full bulletin from BBC One's end in HD (no logo/ticker though):
Worth noting that on the closing sting on the News Channel, the 2013 box was displayed near the end, whilst on BBC One, no logo could be spotted. I usually watch the weekend bulletins via the News Channel though, so I don't know if the logoless end sting on BBC One is normal, if someone can confirm?
I bet a lot of peoples hearts skipped a beat if they tuned in just as the still of the Queen was left on screen with no music. They may have mistaken it for some sort of imminent announcement of her death.