IF they were going to do that - you'll see a wave of lawsuits coming, me included, so I do not believe that will happen.
The ITC ruling doesn't prevent existing watches from using the sensors, just stop the import/sale.
The piece that bothers me in this is how long Apple appears to have been mulling this over, the verdict came in October, so there was no need for a "rush" for a "software fix", and I need to dig in further to see when this actually started, I mean when Massima first sued Apple for patent violations