I've noticed them switch a few times from English to Welsh and back in Wales - Caerdydd instead of Cardiff, Pen-y-bont for Bridgend. Something similar happened to Ireland for a few weeks last year, too. For some reason, Gaelic seems to be excluded from this; I haven't seen Steòrnabhagh yet!
The centring of the map has changed, too - when they first put up the map of the UK, zooming in from the default location would bring you right into the centre of my town. Now it's in the Irish Sea.