It's impossible to get it anywhere. :rolleyes: Only people who can get it right now are industry insiders. Reviewer, developers, etc. It won't be for another month at least before anyone can buy DL media to test with.
This is why TDB recommends that people don't be so hasty to upgrade to this firmware. A lot can still change in a month. For as far as we know, this 2510 firmware that got leaked out might turn out to be a test version and not the final retail version (or it might be the final, but we won't know until the retail package actually comes out). Indeed, all of the currently known DL firmwares, for the LiteOn 832S and for the BenQ, are all under-development test versions, so it's quite possible that this isn't final. Be patient, as having a DL drive will do you no good if you need to wait another month for the media.