The front end has seen tweaks to the grille and bumpers, along with the addition of LED foglights. There's a set of LED lights at the rear now too.
Meanwhile, the cabin gets a new 4.3-inch TFT display in place of the traditional dials in the instrument cluster. There's the option of a huge 8-inch sat-nav screen in the centre console as well. Buyers can also specify a blind spot warning system for the first time.
Kia hasn't announced prices or specs for the UK market, but did reveal it wouldn't be available until at least 2014. In the US, it comes in LX, EX, SX, SX-T and Limited trim levels. The big-selling EX model gets 17-inch alloys, leather seats and air-con.
American-market engines are limited to 2.4-litre or a 2.0-litre turbocharged petrol engine, but in the UK we have a diesel-only line-up, consisting wholly of 1.7-litre diesel units.
When the updated Optima does go on sale next year, expect its price to start at around £22,000.