The actual text of the warranty is:
Note : For California Emissions Vehicles (excluding Pennsylvania and Washington), the Hybrid System is covered for 10 years from the date of original retail delivery or date of first use, or 150,000 miles, whichever occurs first.
For a car to be a CEV, the Kia warranty says the vehicle must be "first sold as new vehicles by dealers in California or any other states adopting and mandating the California Emission Standards"
The states that follow whatever the California Air Resources Board does are:
New York Massachusetts Vermont Maine Pennsylvania Connecticut Rhode Island Washington Oregon New Jersey Maryland Delaware Colorado Minnesota Nevada Virginia
As mentioned before, these warranty upgrades are not free: instead, Kia must increase the price of its cars for all consumers, or lose money. But people whose car was first sold in those states should ask for their warranty extension to 150,000, since we all already paid for it.
Source for the states that let CARB decide on their behalf: