This new model is referred to as the AMD7300.5 and is part of the AMD Fury GPU lineup. As usual, these driver references offer no further information so we can only speculate. Based on the naming, you would assume it's another Fiji-based GPU, but I don't think that's likely unless Vega10 is significantly delayed.
So it could be that the AMD7300.5 is one of the first Vega10 based GPUs, the parts that will power AMD's new high-end video cards. While previous rumors talked about a Vega10 introduction around early 2017, AMD CEO Lisa Su recently pointed to a less specific "first half of 2017" launch timeframe.