That brings up a good point. I could be wrong, but could this be multipurpose? I can't tell what the exact layout is of this new queue, but given the amount of extended queue in the very back wedged in between Potter construction and the old Shrek theater entrance, I'd assume there are days when the queue they're constructing now won't be needed for Shrek at all. This could just be a misconception based on the slower crowds we're having for the moment.
Those who have walked in the new mini-plaza between Pink's, Production Central, and the future entrance to Hogsmeade may notice that there are holes in the cement that are temporarily filled with those small metal caps, meaning they're eventually going to be used for a makeshift queue. Potter is the only logical explanation, but will that makeshift queue connect to the queue being constructed next to Shrek at all..? Maybe I'm overthinking.