Looks like Microsoft PR is weighing in on Too Human now, which is shocking since Silicon Knights was doing such a fine job on their own. Showing its support for the "trilogy" by comparing it to other famous trilogies (which actually are trilogies because they actually have three installments, actually actually) such as the original Star Wars movies and the Lord of the Rings.
I am getting really sick of this arrogant, presumptuous attitude not just from SK and Microsoft, but from all sorts of developers and publishers. Just SAYING a game is an epic trilogy doesn't make it so -- you have to make the game worth something before you can claim it's comparable to "classic trilogies." You can't bottle the magic of a famous trilogy. It's something that just happens, and if you decide before you've even started that you will create that magic from scratch, you will fail. The first Too Human took ten years to make, and they couldn't even make it look good in demo form. To say that is the foundation of a classic trilogy is a twisted joke.
It's never wise to make definitive predictions in this business, but if there is one thing I can say with the fullest confidence, it's this -- Too Human will never, never ever ever, never be to videogames what Star Wars is to movies. Also, Too Human isn't a trilogy until three games exist. End of story.