I had problems with the intel driver in Build 107.
Today Niveditha Rau posted on the xwin-discuss list a response to my problem with a new intel driver for 32 and 64 bit systems.
On my new installed Build 108 system, I copied his intel-drivers and set my
xorg to use the intel driver.
Now on Build 108 the intel driver is back and I have an X-system using the
external monitor in combination with the laptop-LCD-Display by using xrandr.
Search for the title " IPS upgrade to Build 107 -> X fails to start on intel Chipset"
on the xwin-discussion list at opensolaris.org. There are the drivers attached.