Both events will go down in February 2016.
Jamie Smith has been on the road since June, and has a string of dates in the US, Australia and Japan still to come. The new shows have both been scheduled for February 2016, with Four Tet and Bambounou supporting at Le Zenith in Paris on Wednesday the 24th. The full lineup is still TBA for the 10,000-capacity event in London on the 26th, which is set to be the biggest show of Smith's solo career so far.
Ticket presale for both events—available to everyone on Jamie xx's mailing list—will start at 9 AM GMT on Wednesday, November 25th. More tickets will go on general sale at 9 AM GMT on Friday, November 27th via his official website.