[UPDATE: You can ignore the message on the listing that reads: "PS4 Console is only available for Pre-order to customers who have received a Unique Voucher Code from Asda Direct." This isn't the case, you won't be asked for a code.
Asda have thrown a spanner into the works for those of you that have already pre-ordered your PS4. Their Killzone: Shadow Fall bundle is only £385 and will save you £15 against most other sites and -somehow- they're guaranteeing delivery on launch day. So, sticking with your current order or is it time to jump ship?
Thanks to Aerol1 at HotUkDeals.