Unfortunately no.....I work at a Suzuki dealership and just checked stock with Suzuki. They are correct, on BO. I would have to call Suzuki to get an ETA but if they called and got Sept. 15th that should be accurate. Problem there is if Suzuki does not get it on the 15th it could be longer. That's just an Estimated Time of Arrival, I have seen it take longer than said many times before.
I checked through a dealer to dealer site we use and came up with nothing. If the bike is down because of this your only options are to call every Suzuki dealership around you and physically check stock at those shops for the Suzuki part number, or go to an auto store and see if you can match something up.
Wish I could help more. Sorry.