The first one I had was from 2008, the first year of production for this company. Just wanted to post a few (crappy cell phone) pictures of the difference, and give my thoughts on them.
Here they are side by side. The 2008 Mia is on the right in all photos. Stem has been removed. I apologize for the blurry photos.
The color is definitely more purple now, not pink at all. Also, the suction holes are significantly larger now, and slightly angled. I suspect this will make it easier to clean!
It still came in a beautiful bag (now a darker gunmetal gray) and small square box, rather than the huge rectangle and booklet from before.
All in all, I am super happy. It looked like they just tweaked the couple of things that I didn't love about it. :)