Given how recently the Dodgers began contract talks this year, it seems likely any new extension would be announced similarly close to the season opener. Per Ardaya, as of the day

"Will Smith is dealing with an ankle issue and “a little behind,” Dave Roberts said. He added that Smith has been running on an Alter-G treadmill," Ardaya wrote. As long as Smith is ready for opening day, or at worst, a few weeks later, this shouldn't be too big of an issue for the Dodgers.