Delays on Amazon.co.uk

" We're encountering a delay in shipping your order. The new delivery date is indicated below. We'll send a confirmation when your items ship. We apologise for the inconvenience. "

Not sure if this is due to manufacturing issues (yellow bar) or demand? I placed order on October 28.

https://preview.redd.it/sr11b90hxm1e1.png?width=976&format=png&auto=webp&s=94e75e043fbb5df455670c0a0d6d06d68af56016