Well, the header pretty much says it all - Sony has announced today that it has shipped ten million PSPs worldwide, as of October 31. This, according to the press release, is "the fastest penetration speed" in PlayStation history. Please stop giggling at the back there.
Also from the release:
"On the software side, PSP Game software shipment has reached 19.6 million units and 183 titles have become available worldwide as of September 2005. Market for the UMD Video software titles have been expanding and cumulative production shipment has exceeded over 15 million units as of September 2005. More new and attractive titles are expected to be released from content developers and publishers for the holiday season."
Up to date figures are not available from Nintendo, but the company claimed to have hit the five million mark for DS shipments back in March.