I think the cut-off date for free upgrades to 12 is March 5. http://www.filemaker.com/purchase/store/promos.html
You should still contact FileMaker customer service to see if there are other options available.
Thank you Jade.
It is true.
I find it a little mean that is only a month. But, well, I guess if you want something you have to pay.
Thanks anyway, now I know for sure.:-)