I'm suspecting that keys itself was leaked by no other than E3 team. Figure this - FW 3.60 is lowest possible for downgrade to all new SKU's (300X and latest revisions of 250X), and they DO need to raise up their flasher sales. Later on, when DG patches will be available, they can start selling their new dongle, which, I believe, will be announced shotly after 3.60 CFW hits masses (they could always claim for technical issues, or something else). Now, they just awaiting for dev's input (perhaps they have some skilled already), so hold on for new CFW, lv2diag.self's and DG Patches. The reason keys were dropped out to public annonymously is Crab politics on suing hackers.
Well strategy, indeed. But as long as scene keeps moving, it doesn't really matters whether they plotting something or not.