I don't know if anyone else has mentioned this elsewhere beyond a patch note, but the auction house GUI is going to include an option for sorting by total block %. Previously you could only search by total block amount, which didn't help much when block % is just as important if not more.
If you have the patience to find good shields with both stats and high block %, then doing so prior to the patch could be a real money maker for you.
In fact, the first thing I'm going to do when I log in after this patch is buy high block % shields like the storm shield. Except this time I won't have to sort through pages of garbage to find them.
For those of you interested in Fiery Brimstone speculation, it's time to go beyond just being interested. Look at this!
[US] GAH Item won - not delivered in days
7 hours ago