Many people talk about omg what if it mutates and becomes more fatal, but the power of the #2019ncov so far has been its ability to be carried without even causing symptoms.

There are three main scenarios, one unlikely and two likely:

1. Flares up and dies out: This is what happened to SARS and MERS. Easy to diagnose, easy to contain. Our current virus is sneakier and already pretty much past this point.
2. Becomes Yet Another Cold Virus: We have four coronaviruses like this already, and this one might become the fifth.
3. Becomes another seasonal virus, like the flus: Pretty likely

In both the latter cases, the more likely evolutionary pressure is to become less lethal, because such flavors will spread better.

https://www.statnews.com/2020/02/04/two-scenarios-if-new-coronavirus-isnt-contained/