It looks to me like Thunderbolt is mini DisplayPort + PCIE (http://en.wikipedia.org/wiki/Thunderbolt_(interface
Thunderbolt is interoperable with DisplayPort 1.2 compatible devices.
So, theoretically, I should be able to use the Dual Link DVI to mini-DisplayPort converter to hook up the display to the advanced mini dock. I know I won't be able use the usb/firewire ports and the camera on the display this way, but I am OK without them.
I had a feeling you'd come back with that... it does work, but only the other way -- i.e. hooking a DisplayPort display up to a ThunderBolt port... but the ThunderBolt display has essentially its own graphics card inside of it, which is expecting PCIe output, not DisplayPort.
The reason I want the Apple display is that I am in the middle of switching to Mac. T61 is the only PC I've left running Windows, and it being a company laptop, I cannot have it replaced for another year. I was hoping to get the Thunderbolt display now, use it with the Thinkpad for a year (and the other Macs I currently have), and get a MacBook Pro for work (or whatever they come up with next) next year which can fully utilize the Thunderbolt display.
I seem to recall they did a 24" DisplayPort LCD a while back that you might consider looking for on the used market?
I'm still deliriously happy with my old 23" DVI Apple Cinema Displays...