We've already seen some hints that something was coming soon courtesy of the FCC, and now AT&T has confirmed to CNET that both the HTC Inspire 4G and Motorola Atrix 4G will have their HSUPA capabilities enabled sometime in April via a software update. That should dramatically increase upload speeds on the phones (up to 5.76 Mbps), and make them more "4G" than ever before, but still not quite as "4G" as some other "4G." Incidentally, the Samsung Infuse 4G has also been confirmed to be shipping with HSUPA enabled, although it's still not clear exactly when it will ship.

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