Doomfist and the Summer Games seasonal event have both been explicitly mentioned in the current PTR crash log for upcoming Patch 1.13.
Here’s a picture of the original crash log before the changes. Just click on the image to zoom in.
The removal of these references only adds further legitimacy to the leak, of course. The Summer Games seasonal event arrived in August of last year, so the timing makes sense as well - we would expect Patch 1.13 to go live in just over a month from now.
Does this mean Doomfist’s mention has some legitimacy as well? We'll bring you all the latest official - and unofficial information - about Overwatch's next update as soon as we learn more.