Well it's today, or at least it is in the UK it's tablet day!
I think we know so far that it'll be 10", running the iphone OS, we don't know if it'll have a built in phone/3g and need a contract (gulp) and sell for less than $1000. Some speculation on $699 with a contract and $999 without. Speculation on availability puts it anywhere between March and June :/
I'm already wondering do I order one online as soon as the website comes back from it's overloading which will no doubt happen, or queue outside an apple store when they arrive. hmmmm