The only known OMAP3 SOC that can hit 900 MHz is the top-of-the-line OMAP3640. I don't know how far in advance TI announces their chips, but it seems rather late for a device coming out next year.

Tech rumors are so much harder to put over on the Maemo crowd. Before you know it, they've looked up your domain registration, googled you, and hacked your system. :P