There have already been a lot of rumors regarding Samsung's plan for Tizen smartphones, the company is believed to be working on a successor to the Samsung Z1 which is currently only available in a few markets. It appears that the company also has a “Samsung Z LTE” up its sleeve, the particular model seems to be a LTE capable variant of the Samsung Z1.
Even though it's reported as the Samsung Z this handset appears to have the same volume buttons and bezel as the Samsung Z1, and none of the proximity, light and gesture sensors that we have seen in leaked Samsung Z2 pictures. It's possible that this is just the Samsung Z1 with LTE support and nothing more however there's no word from the company yet about the release of this particular variant. It's unclear right now if and when Samsung plans on launching this device and how much it will cost.