Wait for the next version macOS X should not be until next year, but the web is already talking about how it will be called. However, there is no particularly rich choice here - the fact is that Apple has almost exhausted the “reserve” of large cats.
It is for this reason that most agree that the OS will be called only Leon ("A lion"). There were already tigers with leopards.
Most likely, we will find out about this already on October 20, at the next event that will be held by Apple. The company has already sent invitations to it.
It is also expected that there will be presented several new products, which have been talked about on the Web for quite a long time. for example Macbook Air, built on an Intel Core i3 processor. It is also possible to present macbook based on the same processor. Time will tell.
There is very little left until the 20th, so you just need to wait a bit.