Not necessarily. It just changes with each mutation. It's as likely to get weaker as it is to get stronger. But, if it gets too strong and kills too quickly, it will die out by itself as it doesn't have time to spread to more people.

It could even mutate to get even more infectious. But as we stay home and limit its spread, that means there are fewer jumps and fewer chances to mutate to make it stronger or weaker.

We just need everyone to stay home.