Good question! The date of the switchover has been moving depending on our stock levels, we’ve been waiting to run down stock sufficiently until we have started sending out the new RTD.
But yes, there has been a small leftover supply, there are the version we still sell in Europe so it will be sent on so there’s no mix up. We also gave some of this leftover RTD to the staff at our fulfilment centre 
If you order from the UK store today you will receive the new version of the RTD.