Fundamentally: rising interest rates, higher inflation expectations and a rise in US yields relative to other major G10 currencies should continue to drive the dollar higher.
Further into 2017, $10 trillion of off-shore dollar denominated debt is massively bullish for the greenback.
Technically: The dollar index has broken 100.50 - a major multi-year resistance level.
It has now corrected back to that level, and is supported by the 100.50 - 100.00 region.
After this correction, the dollar index should continue higher to the 105 handle.