In 2006 Lenovo started using the term “multitouch” to mean touchscreen via finger and pen, then the iPhone came along and gave it a different common meaning: two finger touch.
It’s important to understand this, because, in September 2009, Lenovo introduced new touch screens which support “multitouch” in the now common sense: two finger touch. This did not and cannot magically give two finger touch capability to the previously released touchscreen via finger and pen tablets.
So Lenovo have bowed to the inevitable and started using the common meaning of “multitouch”, but be careful out there, because NONE of the “multitouch” tablets introduced prior to September 2009 have two finger touch!
Check the Personal Systems Reference tabook if you are unsure. In the display section you will see:
MultiTouch (touchscreen via finger and pen) <-- NO two finger touch capability
MultiTouch (touchscreen support pen & two-finger touch)
Lastly, Lenovo's marketing materials refer to the new two finger touch feature as "Enhanced Multitouch".
March 2010 UPDATE: With the release of the X201 tablet, the nomenclature has become simpler!
If an X201 tablet is multitouch, it is two-finger multitouch. There are no single-touch pen or finger X201 tablets.
Kudos to the members of the community who have raised and researched this subject. Hope this helps you tableteers out there!