AT&T Upgrading 3G in Prep for Next Gen iPhone?

Just prior to the original iPhone's release, AT&T's operation "Fine Edge" brought faster, stronger, better 2.5 / 2.75G speed to the GSM masses. This year, in a strangely reminiscent move, reports are coming in that AT&T is showing their 3G HSPA network the same type of love:
For the past few months we’ve been seeing average download speeds between 500 - 800 kbps with a spike here and there. This morning’s tests however, are yielding between 1400 - 1500 kbps.
Gee, could another iPhone release be on the horizon?
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Rene Ritchie is one of the most respected Apple analysts in the business, reaching a combined audience of over 40 million readers a month. His YouTube channel, Vector, has over 90 thousand subscribers and 14 million views and his podcasts, including Debug, have been downloaded over 20 million times. He also regularly co-hosts MacBreak Weekly for the TWiT network and co-hosted CES Live! and Talk Mobile. Based in Montreal, Rene is a former director of product marketing, web developer, and graphic designer. He's authored several books and appeared on numerous television and radio segments to discuss Apple and the technology industry. When not working, he likes to cook, grapple, and spend time with his friends and family.