If this is correct, then the Revolution is ready for mass producte before the May launch (i.e., no shortages):

Thus, according to gamemag.ru, who is citing Inside Gamer, is seems that Nintendo Revolution’s configuration is complete and the device is ready for mass production. And since the release date for the Revolution is in May, that gives the Japanese manufacturers 5 months in order to manufacture enough consoles. Well, it’s hard to define "enough" in this case, as the success of Nintendo’s console is relatively uncertain, at this moment.

And the second console system will beat Sony to market. I suspect that they'll have to hit a grand slam to catch up.