Harvey. You’d do well to listen to what has been said on here, particularly from staff. I’m based at Liverpool for a different TOC and go on the depot where all the 331s are getting brought through to the UK. The drivers on this side of the country haven’t properly got their hands on them yet, so a set making its way to Leeds would be all over the forum, the internet etc, because it would have to be either dragged or sent on a magical mystery tour of London or Scotland via AC lines to get there. Take it from those with some knowledge that it won’t be happening in May.
It also isn’t your place to give the orders around about the end of a conversation. That’s for the mods to decide. The railway is usually full of rumours and nonsense, but on this occasion, you’d be wise to presume a delay will happen.