No, they'll release Java 7.0.0.1 for free. If you want security updates and other bug fixes just fork over a couple grand for a Jmetalink account.

Tongue-in-cheek, obviously. IBM's implementation is generally a good one as well, and is likely to always be free, which should keep Oracle doing the same.

Keep in mind that JDK7 (and a version of JDK6) is open sourced and GPL licensed at this point.