I am still working hard on the experiment (we do the best we can with the modest funding available). Our experiment has received a lot of attention and many new groups have emerged that also aim at studying quantum states of mechanical systems. A serious competition has started and I am optimistic that within 5 to 10 years the ideas of Penrose on gravitational induced decoherence will be tested.
Last week I gave a talk on the above topic at the PITP in Vancouver. The slides and talk will be posted on their website. There are some images about parts of the setup and of some recent results.
An email from him: