TTC has used various maps in their publications in the last few years. At the rate that Line 5 and 6 are going, I wouldn't be surprised if the next version adds both, but removes Line 3 (perhaps showing an express bus or something, similar to the 900).
Here's one TTC tweeted last year:
View attachment 443571
Looking at this map, is the st clair streetcar able to be extended eastward, would that be even a good idea ? Looks like it's not too far away from the soon to be Ontario line