I can't see another discount any time soon. They timed the expiry of the current ones for both WDW as well as DLR to coincide with the opening of SWGE. They know the crowds will be insane and they don't need to offer anyone an incentive to go. That's my personal opinion and I would love to be wrong.
Current prices are insane. I priced out tickets for our Christmas trip. Four 10 day park hoppers is a little under $2900 US (start date of Dec 25th which is probably the most expensive tickets you can buy). I can save about $600 by purchasing through
UT, so that's a no-brainer.
I still have one set of non expiring tickets left from the CDN discount a couple of years ago. They are 7 day non hoppers. Paid a little under $1200 US for them back then. To get the exact same tickets now through Disney with a start date of Dec 25th, they are just under $2500 US!