I just checked when I read your post - 27.83 MB but it started so quickly, I never saw an explanation. I watched every step and it still never mentioned the reason. ??? It's installing now - I'll keep watching... NOPE! It's probably better that way - if they told us what it was for, there'd be a rash of new posts about "What the new update DID to our phones". Hell, there probably will be anyway!