Eric Schmidt let it slip that they are working on their own Nexus-ish tablet that will be in production around 6 months from now. That timing is very interesting, as it's just before Google I/O 2012.
What could that mean? This year's event may end up being tablet-heavy -- trying really hard to get developers on board with Tablet development. Google needs developers to build apps for Android tablets if they expect to compete with Apple's iPad.
If this is all true, it wouldn't be hard to imagine that Google will be giving all 5000ish developers attending the conference a "Nexus tablet". Thankfully, registration this year will include a sort of "CAPTCHA" that is designed to weed out scalpers and non-developers who register just for free gear.