If the "Software Update" document is accurate then that means those of us with Nov, Dec, and Jan builds already have the current "Software Update". So until someone tries the update out, I'm betting it won't fix or minimize anything.
Software Update doc: http://www.docs.sony.com/release/WhiteMuraUpdate.pdf
Here's a diag from my December build:
Note, I changed the exposure down to 1.3 which darkens the image a little so the text is easier to read. So that's why...