According to the ACEA timeline, 2002 spec oils could be marketed until 11/2006, and 2004 spec oils until 12/2009. So any 2002 oils would have been produced at least 4 years ago. There is probably still a good bit of -04 stuff out there. The 2007 spec oils can be marketed through 12/2010, so we could see those oils for some time yet. Also keep in mind that the specs for “A” and “B” oils changed little, if any, between the 2004 and 2007 requirements.
Prior to the 2004 spec, “A” and “B” oils were specified separately, i.e. “A1” or “B1”. Beginning with the 2004 specs, “A” and “B” were combined and specified as “A1/B1”, for example.
According to Lubrizol’s Relative Performance Tool, the 2008 ACEA “Ax/Bx” oils represent quite an improvement in some areas over the 2004/2007 “AxBx” oils. However, I’ve yet to see a bottle or spec sheet for an ACEA oil that is “-08”, and suspect that most, if not all, ACEA oils in the US are still -04 or -07.
Since the 2007 spec cutoff date (12/2010) is upon us, I would expect any oil data sheet dated after 12/2010, or any oil produced after 12/2010, claiming ACEA compliance would need to be a -08 oil (assuming the oil manufacturer complies with ACEA marketing requirements).
It seems much of the confusion could be eliminated if ACEA compliance required the spec revision date be included when ACEA specs are referenced, i.e. A1/B1-07. But I can find no such requirement in the ACEA specs, and the revision/date is often left off (intentionally?) the data sheet or oil bottle.
Finally, I want to make it clear that I'm not any kind of authority on ACEA specs. What I have posted is simply my understanding of the ACEA requirements based on a review of the ACEA's published documents.