The phrase "Next Fall" is an idiomatic expression that means soon or in the near future. It can be used to describe something that will happen at a later time, without specifying exactly when it will occur.
I did carefully remove the vinyl and store it so I can be able to use it again for next fall. (odetoinspiration.com)
That's the name of new math and language arts standards that are supposed to be in place next fall in 45 states. (npr.org)
The idea of charter schools opening by next fall might be overly optimistic, given the short timeline for creating the commission. (wacharterschools.org)