you can still get paper tix (at least I think so)
but when you buy online...it's like a $5-$10 more to get the paper one, so pretty much no one does
If you go to the box office, you can get a paper one (and at IMP, not pay the ticketwanker fees)
It's just a liability for the scalper, so it's better for them to just get digital and sell online or via stubhub and the like and not have to stand out side before the show hoping some poor sap will pay the price you want
although JeffML said he got a digital tix texted to him at MPP...so maybe it has changed in the last week or so