As a Volt owner, my first reaction to such news would be to wonder what is meant by updating the software in a Volt "to limit charging to 90 percent." The Volt has been programmed to use only a fixed portion of the full battery capacity for Electric Mode driving ("full charge" at one SOC level, "switch to extended range" at a lower SOC level, i.e., the "usable window"), and when the battery is "out of charge" so you can’t drive any more Electric Miles, the actual state of charge is still above the 15% SOC level. So, would this "software fix" be intended to limit charging to 90% of the Volt’s normal "usable window," or to 90% of full battery capacity?
A battery electric vehicle has no such "usable window." A software fix to limit charging to 90 percent seems more likely to involve a BEV. Indeed, when I did a search for "69,000 Volts recalled," I got a list of links, most of which referred to the recall of Chevy Bolt EVs.
The list did start with my original search term, a link titled "GM recalls 69,000 Chevrolet Volts EV," but it was followed by three links referring to "GM recalling nearly 69,000 Chevy Bolt EVs." At the bottom of the first page of links is a reference to the battery recall in Germany affecting the Ampera-e, described as a European version of the Chevrolet Volt EV, which should make a Volt owner wonder why the article is referring to "the Volt EV," and not just "the Volt."