We don't like it, but we'll adjust.
We have an October UY and my two daughters typically vacation in the summertime, and usually on fairly short notice. Now, we'll have to bank by the end of May, and if we have a cancellation after June 1, we'll be in a jam.
For those who simply don't use their points at all in a particular year, the new banking deadlines give them two extra months to bank everything.
But for us (we use 75+% of our points each year), the change took away the ability to bank the small percentage of points we don't use very late in our UY.
Like I said, we'll adjust, but the change has certainly reduced our flexibility.