The first Omap4 based devices are anticipated to be released within 6 months, and certainly by this time next year. That's not long off. If you haven't already, you should watch some of the videos of the TI Blaze; it will give you an idea of the technology jump we're about to see in performance and power efficiency. If you're satisfied with what you have now, then I think it's worth waiting. Today's top-of-the-line phone will probably feel really dated sooner than we think.