From their newsletter.
They also quoted an Atlus employee saying that the 2008 lineup is "awesome".
"While we can't get into specifics, we can say that Atlus will continue to support the Playstation 2 into 2008. While the next-gen platforms hold a great deal of promise and potential, much of which is already being explored at present, it is very often the case that viable platforms with large install bases are for the most part abandoned when the new generation of consoles appears. The Playstation 2, with its tremendous user base, is one of the first platforms in industry history to defy this trend. As long as developers continue to design great games for the system, Atlus will continue its support."
They also quoted an Atlus employee saying that the 2008 lineup is "awesome".