My18.5?

[Jimmye]

Hi everyone, I've just ordered a red 110TSI Comfortline with DAP in Sydney. After 10 years with a Hyundai Tucson, safe to say my wife and I are super excited. (Kids too, especially about the red.) Dealer says it's being built at the moment, and ship will arrive in Brisbane in the second week of April '18, with delivery to Sydney before the end of April. I read somewhere there is an 'MY18.5' Is that a thing? And if so, what has changed from MY18?
Thankyou, learnèd VW sages!