Well, they are due, but at the moment we are not entirely sure when! However the range of Sennheiser MM Travel 'phones are due to be overhauled with the "X" suffix being added to the series. The new 'phones will all have Apt-X capabilities and can be used with Sennheisers existing BTD300i adapter or the new BTD500 USB. Prices and availability for the UK are still to be considered.