Requires:
Adobe Photoshop CS5 or CS6
Tested in Adobe Photoshop CS5, CS6, CC

Move downloaded file to Photoshop/Presets/Scripts/ and it will be available in Photoshop through the menu File -> Scripts -> ...

You can also set shortcut in Edit -> Keyboard Shortcuts (open File> Scripts> and find installed script).

Changelog:

V2.0
New Interface :

I guess most noticeable change is scripts new interface:

Anchor Point

I also added option to select the anchor point — point around which all transformations will be made. You can choose one of the nine positions: top left corner, middle center, bottom right corner etc.

Basically it replicates functionality of the same control in Photoshop’s transform tool options.
Small fixes

Beside that, Transform Each now works correctly with layers inside different groups and you can now undo all script actions in one click. Finally.
Yep

Yeah, it’s 2.0 despite of the fact that previous version was just “Beta”. Because this is how things are work here, son.
Anyway, hope you’ll find this update useful. Have fun!