ATI/AMD Tries to Fool Consumers by Re-branding Previous Generation GPU

What would you think if Apple would replace the current Radeon XT1600 XT Mobility in MacBook Pro by the Radeon X2300 Mobility? Based on the branding most users would think Apple is moving ahead, upgrading the mobile GPU to recent model featuring higher performance level. Well, no. The Radeon X2300 Mobility is in fact a re-branded Radeon X1700 featuring a minor increased of its clock speed.
So, AMD/ATI tries to use the introduction of new graphic cards HD2xxx based on its new GPU to recycle previous generation GPU installed on a re-branded model. If this could be consider as a marketing trick it should at least be explained or clearly stated to consumers.