My V6 TDi has them, but a 1.8T & 1.9TDi SE I looked at when sourcing the new car didn't.
I expect it's an optional extra along with many other optional extras.
I can't confirm whether it was a standard on the car as I didn't buy it new.
I know that for a period(about 6 months), ALL SE models came out with free rear elec windows, cruise and heated side mirrors, but they are normally optional extras. I can't confirm(or deny) that they are standard on V6's, but my 2.5TDi V6 has got them. If you're buying one, be sure to ask the seller, whether it's a V6 or not. Don't be scared to ask as many questions as you want when it comes to buying a car, no matter how trivial they may seem.