That is clearly incorrect. His whitepaper was released on October 31st, 2008 via the metzdowd mailing list
Bitcoin P2P e-cash paper
Satoshi Nakamoto satoshi at vistomail.com
Fri Oct 31 14:10:00 EDT 2008
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I've been working on a new electronic cash system that's fully peer-to-peer, with no trusted third party.
The paper is available at: http://www.bitcoin.org/bitcoin.pdf
The main properties: Double-spending is prevented with a peer-to-peer
network. No mint or other trusted parties. Participants can be
anonymous. New coins are made from Hashcash style proof-of-work. The
proof-of-work for new coin generation also powers the
network to prevent double-spending.
Bitcoin: A Peer-to-Peer Electronic Cash System
Abstract. A purely peer-to-peer version of electronic cash would
allow online payments to be sent directly from one party to another
without the burdens of going through a financial institution. Digital
signatures provide part of the solution, but the main benefits are
lost if a trusted party is still required to prevent double-spending.
We propose a solution to the double-spending problem using a
peer-to-peer network. The network timestamps transactions by hashing
them into an ongoing chain of hash-based proof-of-work, forming a
record that cannot be changed without redoing the proof-of-work. The
longest chain not only serves as proof of the sequence of events
witnessed, but proof that it came from the largest pool of CPU power.
As long as honest nodes control the most CPU power on the network,
they can generate the longest chain and outpace any attackers. The
network itself requires minimal structure. Messages are broadcasted
on a best effort basis, and nodes can leave and rejoin the network at
will, accepting the longest proof-of-work chain as proof of what
happened while they were gone.
Full paper at: http://www.bitcoin.org/bitcoin.pdf
He realeased Bitcoin v0.1 on Thu Jan 8 14:27:40 EST 2009 -- more than 2 months later. By May, he had ceased all communication on the mailing list.