Contrary to the obviously less than clued in article says, it's all Linux, be it Android, Chrome or WebOS.
But is it? When you have three completely distinct ways of writing applications, would you still count them as one OS simply because they have the same kernel? Would you be running a glorified browser, like ChromeOS, on a SuperDome Supercomputer?
If the PR team is planning to "manage the rumors", I'm hesitant to believe that the rumor is accurate. After all, if HP was really killing the Slate, why wouldn't they want word out as soon as possible, or why would they care about managing what's said?
Actually, I'm reading this exactly the opposite way - if HP were not killing the Slate a simple response would be sufficient, something like - "Of course no. That rumor is ludicrous. We are still shipping the Slate in the already announced timeframe."
On the other hand, if they are "killing" the Slate and, say, replacing it with the same hardware but running WebOS, they probably need time to assess how much time will that take, or whatever, so they can come out and say - "We are killing the current Slate device if favor of releasing so-and-so in six months."
I may, too, be reading it wrongly, though. Probably it's best if we don't assume either way until HP comment on the matter or release the device.
You need to only ask yourself whether you trust Opera Software ASA.
Or any individual one of their employees, who have access to said servers. And when it comes to financial information, my position is no on both counts. I sure hope most people share my position.