When are the new autism criteria coming out? do autistic kids have to be re-diagnosed?

Yes: The reviews were by the psychiatric association for implementation in 2013 as part of dsm5-- this will narrow the criteria, currently one in 110 as pdd, or autistic spectrum --resulting in over one million patients by restricting criteria may will lose there benefit.

DSM-V criteria of : Autistic disorder came from in-depth research on diagnosis variability + barriers to funding & services from schools/ other agencies for Asperger syndrome or pdd-nos diagnoses. Because underlying neurodevelopmental deficits are the same in all spectrum disorders, all need the same level of care. "social communication disorder" is used for young kids who usually don't have stereotypies.

May 2013: The new DSM5 came out in May 2013 . No your child does not have to be re diagnosed. Continue with his therapies, pediatrician and or developmental pediatrician's visits and or psychologist/psychiatrist care.