The USD has weakened about 6.7% in September against the Euro. It is currently at an exchange rate of just over $1.36 to each Euro. This could have a significant impact on the KC-X selection in Nov. (or Dec.), increasing the cost of the A-330MRTT bid, while at the same time reducing the cost of the KC-767NG.
If this year's compitition follows the example in 2008, then initial contract could be for as many as 69 new tankers, including the 4 SDDs. I know the KC-X will be purchased in USD, but to equilize the exchange rates, the EADS bid would have to be some 30% higher to convert the profits into Euros.
Both Boeing and EADS will have a chance near the first of Nov. to adjust their final bid prices to the USAF, and the exchange rate between the USD and the Euro will have to be taken into consideration before the final selection is made by the USAF.