Hmmm. Do the 2011s have a (less) curved bar in the back? I took DS to BBB about 2 weeks ago to see how he fit in one and it had a curved bar. I assumed it was a 2011 model, but I was more interested with how it pushed and felt for DS, so I didn't look too closely at the model or the price tag.
I asked Baby Jogger on their FB page about when the 2012 BJCMs were coming out and they said February.