If you want to develop apps for Tizen has not yet to test many ways its apps on real devices. There are two more or less available Tizen developer devices: the RD-210 and RD-PQ. To use the former actually makes no sense, since there are no hardware buttons and so many apps are probably unusable. From RD-PQ, however it seemed so far to be no larger quantities. So far it is only known that it was issued to participants of the Conference and the Tizen Tizen port-a-thons.
Now again seems to be available to a small number of units (100 units) of the RD-PQs. Interested developers can here Apply for one of the devices. The whole thing is of course a few strings attached to it here read can.