Here is the email I got from Cento, which is what was essentially reported earlier:
Dear Mr. Della Vecchia:
Cento Certified San Marzano Tomatoes have been, and continue to be grown and
produced in the Sarnese Nocerino area of Italy. They continue to follow the
same high quality and standards that Cento has always stood by.
After our new crop was approved and certified authentic, a new organization
was appointed to govern our labels. After months of delay in their
response, we were notified that our label design no longer conformed to
their requirements. Due to the unreasonable nature of the new label
requirements, Cento has decided to remove the DOP seals from our label;
however, they remain certified San Marzano tomatoes and continue to follow
the high quality standards.
We assure you, in no way has this product's certifications and quality
standards changed. You are paying for the same certified, high quality
product, sure to beat any other certified San Marzano tomato brand. In
appreciation of your continued patronage, we are going to mail you a supply
of cents-off coupons and a complimentary copy of our recipe booklet. If
interested, please email us your complete home mailing address.
Thank you for supporting Cento Fine Foods!
Michael A. Capri
Also, I found a jar of "real" SM's (they are listed on the consortium website). They tasted nearly identical to the Terra Amore e Fantasia, and very close to the Miracolo (both from Sabatino Abagnale). They were slightly, slightly more sweet than Cento, but more mineral in character. What they are not, is like candy, as was portrayed in the long post by the distributor earlier in the thread.
This jar cost more than I care to admit I paid for it. So it will never be gracing my table again. It will be interesting to compare it to the agrigenus, which just got delivered (and only cost $5 per can).