My prayers have been answered: Lightroom 3 and Adobe Camera RAW will feature lens correction (perspective and distortions).
Check out the video below:
Lightroom 3 and ACR will ship with a selection of lenses for automatic correction of distortions, chromatic aberrations and vignetting but the really powerful feature is the profile editor, which will allow the creation of profiles for any camera/lens combination, very useful when dealing with third-party lenses or old models.
My only complain is that the perspective correction is not good enough; having three sliders for X, Y and Z-axis rotation is cumbersome compared to DXO keytoning feature.
Overall, it’s a very important upgrade.