I got in touch with Rails' customer service today to see if there was an update on the pre-orders for the Hattons Genesis coaches. This was their response:
"We haven't yet started to raise the orders for the Genesis coaches but will be doing so in the near future. As long as you had a confirmed preorder with Hattons, we will fulfil this preorder."
So, no updates yet but it looks like we can expect to hear from them soon