Today they’ve put them on their website for pre-order, and there are three versions. The PRS-TS version that I reviewed has the combined timer and thermostat. There’s also a thermostat only model, the DT-TS, if you have a timeswitch already, and the PRTHW-TS, which is the same as the one I reviewed, but with the addition of another output to control a hot water cylinder.
All are available either on their own for £154.99, or with the RF receiver for £199. And there’s good news for Android users too – there should be an app available on the 16th.