I wish I could articulate the conversation I just had in a better way, but it seemed like the guy I spoke to had no idea whatsoever.
He said first off that there is no new battery, just a new motor, and my car would be the "original specification" that I ordered.
I then told him about my conversation on chat where I was told it would be a new battery with 305mi range and 5.6 0-60.
He said that there is some confusion at the minute as they only just found out themselves, but my car would have a range of 278 miles and the "old" 0-60 of 5.6 seconds. So this is an entirely new set of figures.
I explained that the car I ordered had a range of 254mi and 0-60 in 5.3 seconds, and he said "oh, yeah. It is 5.3 seconds, but it's saying 278 miles".
So he had no idea, he just said it was 0-60 in 5.3 but I kind of feel he was trying to get me off the phone.
This is really poor on Teslas part...