Samsung might use a solid state battery in a cell phone within 2 years, probably longer for EV (needs more safety testing). They estimate 2025, or second/ third gen EV?We can only hope. A battery breakthrough is needed. If something like the solid state battery from the University of Texas works, then we will see this happen for sure. Perhaps even faster. Without it we'll have to endure a slog.
However, I think incremental improvements, not world changing.