I've been somewhat regularly pestering my PM to see if there's been any internal mention of delays etc allowing us faithful manual SP forms users to continue doing so.
So far answer has always been "no", I checked again today and the official start date is December 28th, which is a holiday for the PO anyway, so Tuesday December 29th we have to start doing the online customs forms for SP same as we do for tracked packet, expedited etc.
It's a good thing I remembered to bug her about it again today, for some reason I had it in my head it wasn't starting till the "mid January" timeframe when the new rates take effect.
Figured I'd put the date up for anyone else thinking we had till January sometime....