ASUS has just released another minor update for the EEE Pad Transformer TF101 (188.8.131.52) - not much on the changelog mentioned other than "general performance and stability improvements". However, I did notice they fixed one very important thing (to me) - the wake on keyboard dock keypress now works if you disable the battery saving option in the ASUS Customized Setting section!
Finally this works because since ICS was released on the TF101, this feature did NOT work at all! There were also reports that the Gmail app crashes less often with this update. So go ahead, hit that firmware update button already to grab this latest update!