I think their "plans" are changing pretty rapidly these days, for a number of reasons.
Case in point:
according to this site, Toyota just announced the price of the next generation 2010 Prius in Japan will be about
12.7% less than the outgoing model, "in light of the brisk sales of the ... Honda hybrid Insight, according to the sources."
Stopgap measure to fend off Honda until they can produce a cheaper car (if that plan doesn't also change).
No idea if that'll translate to North American prices. Exchange rates, and all.