Based on my testing and the thread over at Reddit it seems that this update mostly just fixed the freezing issue that some users were experiencing. They did NOT touch the Intel drivers or the sleep battery drain. My device still seems to be burning through the battery pretty quickly in sleep so it seems that they in fact did not fix that. However I am seeing it say 10 hours of battery life left instead of 4-6 hours that it was saying before the update, but it is too early to tell if I am actually going to get that much time out of it.
So all in all it looks like they squashed on major bug but didn't really touch the others. I wasn't having the freezing problem on my SB but I was having it on another SB that I was setting up for someone at work. Since the update the work SB has not frozen but I still need more testing to be sure that it is fixed.
I hope they fix the battery sleep bug soon! That is really the last major problem that my device is having.