I don't think so. It makes it sound like if that's ever a bother, they'll drop it. But right now, they probably have the deployment architecture so no reason to ever remove it.
On the other hand, don't hold your breath for an OpenJDK release from Apple. In fact, that's very likely the purpose of the move: they're warning developers they will not port Java 7.
"It makes it sound like if that's ever a bother, they'll drop it."
Right, it's the same ambiguous phrasing that Apple uses to let iOS jailbreakers know that Apple isn't going to go out of its way to support them. If a future update breaks a jailbroken installation: too bad. Which isn't to say that Apple will actively work on making jailbreaking impossible.
And it's a suggestion to people who rely on Java being there that they should keep a copy of the installer package handy, because it might not be included later.
