That's as secure as a bottle of Talisker within 100 miles of Spinola
But not only did the PCN talk about different packaging, it also contained processor product codes that Intel hasn't yet talked about.
These include a mix of Pentium 4 XEs using a 1066MHz front side bus, Northwood LGA steppings, and some socket 478 Pentium 4s and a 3.8GHz chip.
Overclockers Russia is here, it points us to Babelfish translation here.
And the Intel PCN is in PDF form, here. µ
See Also
Intel to launch 2MB 1066 chip in Q4
INQUIRER guide to Intel model numbers
Intel roadmaps