According to this 1UP piece, Valve’s confirmed that free content already added to the PC version of Team Fortress 2 – and confirmed for release for the 360 SKU – won’t make it to the PS3 game. Snip:
“We don’t have PlayStation developers,” Lombardi told us. Earlier in the interview, Newell discussed how Electronic Arts had handled the PS3 port of Orange Box rather than Valve internally. When asked whether or not EA would support the game by helping port the downloadable content over, Newell said, “They’re not doing ongoing development on The Orange Box for the PS3.”
More through the link.