Auto express has published these pics of a very lightly camoflaged convertible. No surprises really, its an F56 with the same soft roof on
http://www.autoexpress.co.uk/89989/2015-mini-convertible-spied-undisguised-pictures#0
http://www.autoexpress.co.uk/89989/2015-mini-convertible-spied-undisguised-pictures#0