When will Thinkpad feature USB 3.0?

USB 3.0 has been made public almost a year ago. NEC has started to mass-produce the first USB 3.0 controller hardware. Linux was updated to USB 3.0-compatibility in the beginning of this September.
My question is at what point in time commercial notebooks, business notebooks and Lenovo’s Thinkpad-brand in particular, will probably feature compatibility.
I feel like with all the new PC-standards introduced in the last 12 months – Windows 7, Blu Ray, USB 3.0, etc. -, it doesn’t look like a wise decision to invest in any long-term hardware, like a business notebook, before they get featured.
What does TechRepublic think? Does it make sense to wait for USB 3.0?