WWE Summerslam is the biggest event of the summer and will take place on August 11th. Finn Balor was unable to make it for the Smackville event owing to sickness, but Ali was a good replacement for him.
On Wrestling Observer Radio, Dave Meltzer said that Nakamura vs Ali for the Intercontinental Title is not official for Summerslam yet. However, going by the current direction, it is very likely that the match will be taking place at Summerslam.
Of course, plans could change at any time as WWE tends to do that often, so we will only know as we get closer to the event. However, the match will certainly be a great one if it ends up happening.
We will keep you updated regarding the Summerslam card once we learn more.