Uh, no..the Shake Reduction filter is a Photoshop CC thingie and is not in ACR 8.x. So, it won't be in LR5 either.
I see, thanks for explaining.
So Paul was probably referring to the improved Smart sharpen functionality. It seems to be a bit more adaptive to the image features. I don't know if also the deconvolution part of it has changed under the hood. I've sofar found FocusMagic to be significantly more effective.