New citizenship law applies to people living in Belgium for 3 years?

Hello,

Does anyone know if the new Belgian citizenship law that was approved in late 2012 has come into effect yet? I am referring to the law, under which you have to have lived in Belgian for 5 years and complete a number of other requirements before you can apply for citizenship.

I have been married to a Belgian and living in Belgium for 3 years now, so can I apply under the old law or will I have to wait another 2 years before applying?

Will the new law apply rectroactively? Just when I thought I could apply, they change the rules. Thanks for your help.