Code example: http://jsbin.com/ikAbOMeL/1/edit - Works well in Chrome (latest), Fx (latest), Safari (7).
Using the virtual machines from http://modern.ie to test, so yes, pure standalone IE:s in clean VM:s, no compatibility mode shenanigans.
IE9 has support for SVG (both inline and embedded etc), as does 10 and 11. All of them also support CSS transitions. However, IE being IE...
I remembered that IE11 has way better devtools in terms of live updating of the DOM view, so I checked there: the style-attribute does indeed get updated with the "transform: matrix()"-values as the Tween runs, but nothing happens in terms of visual rendering.
This might well be an issue with IE:s handling of CSS transforms on SVG elements, but my Google-Fu has brought up little of value so far...
EDIT: This post claims that IE10 (at least) does not support CSS transforms on SVG elements, but I have yet to find a definitive source on that. Would explain it. I'm very new to Greensock, but maybe animating attributes á la this SO post would work better? In this case, specifically the SVG "transform" attribute...