When will BT offer Gigabit over FTTP?

[RichTeaBiscuit]

I saw the announcement from Openreach in November last year that they'll make Gigabit available over FTTP.

I currently have Infinity 4 with the 330/30 connection. Is there any information when Gigabit will be available to order?

Thank you.

[TelephoneBob]

Openreach made it available to ISP's on December 7th last year.