This is simply not so...
Factory options are on Toyota.com, but are specific to region. Each sales region (there are 12) determines which factory options they will sell. Example; go to Toyota.com and build a TE using your zip code. If others are correct and GST ordered none, the KDSS option will not appear. Now, go build one using a Denver zip code and I suspect the KDSS option will be there.
You may have to travel to a different region, as many have.
EDIT: This may help:
Determining Your Region for Toyota Deals
Toyota divides the country into 12 regions, offering different deals in each. The territories are listed below. As you research your purchase, keep in mind that you’re not limited to the region you live in.
If there is a significantly better deal available in another region, it might be worth the trouble to travel and buy there. If someone offered you a few thousand dollars to drive to a nearby state and back, you might very well take the deal -- why not make the same drive to save that money on a new car? Once you know your region, make sure you check out the Best Toyota deals available to you.
New England Region -- Maine, Vermont, New Hampshire, Massachusetts, Rhode Island
Greater New York Region -- New York, New Jersey, Connecticut
Central Atlantic Region -- Pennsylvania, Maryland, Virginia, West Virginia, Delaware, District of Columbia
Southeast Region -- North Carolina, South Carolina, Georgia, Alabama, Florida
Western Region -- Missouri, Iowa, Kansas, Nebraska, South Dakota, North Dakota
Ohio Valley Region -- Ohio, Michigan, Kentucky, Tennessee
Midwest Region -- Illinois, Indiana, Wisconsin, Minnesota
Mountain Region -- Colorado, New Mexico, Arizona, Utah, Nevada, Wyoming
Gulf States Region -- Texas, Oklahoma, Arkansas, Louisiana, Mississippi
Northern CA Region -- California north of the Los Angeles metro area
Southern CA Region -- Los Angeles metro area, and areas south
Pacific Northwest Region -- Washington, Oregon, Idaho, Montana