Addendum:

> They don't seem to be sure if PacketPro is 1.5 or 2.0 GHz.

One more (external) source supporting the '1.5 GHz' version:

"PacketPro [...] will feature one or two PowerPC CPU cores running at up to 1.5GHz."
http://www.linleygroup.com/Newsletters/LinleyWire/wire101001.html#1

Some more from that same article:

"PacketPro is essentially AppliedMicro's Plan B. The company set out to design its own PowerPC-compatible CPU, code-named Titan, but that project ran well behind schedule and was ultimately canceled. From its ashes, and amidst a change in corporate management, the PacketPro product line was born."

That "amidst a change in corporate management" part is interesting. The Titan core based APM83290/"Gemini" processor was announced in October 2009. Logically, the switch from Titan core based APM83290 to PPC465 core based PacketPro must have happened somewhen after that. Applied Micro's CEO transition was announced in late January 2009 to be completed in early June 2009. In August 2009 the CEO transition was presented (page 3) by the company as being completed. So if I'm not mistaken then there must have been a time period of at least about half a year between the completion of the "change in corporate management" and the birth of PacketPro (and thus the abandonment of Titan). (Not to mention that as recent as July/August 2010 Applied Micro presented Titan as still going well.)