Now happening, right now we're getting a "SERVER NOT FOUND" message, but hopefully the new website will be displaying soon, although it may be patchy for up to 72 hours.
Unless there are major problems we will be sending a newsletter out, with details of the offer, on Monday. Meanwhile, and without going into details, I would advise against placing any orders until the newsletter has been received by customers, and non-customers should wait for the announcement on social media.
Just to make life more complicated, it isn't just the website that's new, it's also on a new server.