Wednesday's US Dollar Index weakness was pressing toward a test of last Thursday’s Draghi-ECB low at 97.59, which, if violated and sustained, will increase the likelihood that the dollar is in the process of establishing a March-December Double Top after its 27% advance off of the May 2014 low at 79.80.
One implication of a rest-corrective period for the dollar is a reduction in the intense headwinds that have negatively impacted the commodity (CRB) space during the past 20 months.
That said, much depends on what the Fed does and how it explains its policy action at next Wednesday's meeting, as well as the price action (weakness or recovery) in oil prices.
At the moment, DX exhibits an ominous technical set-up, while the CRB shows improving anecdotal evidence that it is at or near a significant low.