Whoever posted this claim is talking total crap, I'm afraid.
Although work on the downgrader is progressing, no PSPs have been bricked during testing, and it's still a little early for that to have even thought of happening.
Seems like someone somewhere is claiming to be an insider for the sake of popularity - if someone with posting rights on the source forum would care to reject this rumour, I'd be most grateful :)
The downgrader will come when it is ready. Is a week really so long to wait?