To solve a crime, the common strategy is "follow the money." To solve the mystery of the Apple Tablet, the strategy may be "follow the app testing."
That's the theory, at least, of Flurry Analytics, who recently announced that they've tracked the testing of 200 apps over "50 devices that match the characteristics of Apple's rumored tablet device." Flurry also claims to have placed said devices on Apple's Cupertino campus.
Another tidbit: the hardware detected was running a hitheroto unknown OS identified as v3.2 (iPhones are currently running OS 3.1.2). Theorized Flurry, "Historically, Apple releases OS upgrades just before releasing new hardware. With significant expected changes (e.g., multi-touch, multi-tasking) for the tablet device operating system, there was concern among application developers that the tablet would not support existing iPhone applications. However, from the testing we observed, it appears that Apple wants to leverage the 130,000+ applications already available in the App Store on day one for the new device. For the developer, this is good news."
(Interestingly, one commenter already challenged Flurry's findings, arguing that the tested devices could just be garden-variety iPhones. VP of Marketing Peter Farago responded, "If this were an iPhone we were looking at, the hardware would tell us when we ask it (via the software). So we can rule out that this is an iPhone. Also, we already see verified iPhone devices testing OS 4.0 and these leave (Apple's Cupertino, CA) campus, whereas this device does not. This makes sense given the secrecy around the new tablet device as the launch event nears.")