It’s not certain if this applies to Model 3 owners, or whether all on-the-road Model Y examples will get the update. The Y has only been on the road for several months, so there’s a chance this could cover all existing models.
Tesla has previously improved range through software, adding 15 miles to some Model 3 versions. in 2019. Even so, this could easily be welcome — and important when range may be crucial to fending off competitors like the VW ID.4.