Most Helpful Guy
We will change a lot.
So, like the old homo races, they do disappear but they still exist because they are us.
I risk to say that we are almost reaching a point when it will be very hard for us to be extinct. "Us as a continuos specie, not as our current form."1
Most Helpful Girl
I agree with @ThisDudeHere
Assuming we manage to survive for the next 200-300 years, we most likely will colonize other solar systems and possibly go beyond our own galaxy.
At our current pace of technology, nuclear fusion and insterstellar travel doesn't seem like such a big obstacle.2