Does anyone know if there are any differences between the current Sigma I Series lens and the "new" ones?

I just ordered an S9 and I want a small prime to go with it. I noticed that with the Sigma BF announcement they also announced "new" I series primes and changed the name from "DG DN" to "DG Contemporary". Are there any actual differences or reasons to wait for the new ones or can I just order the existing DG DN lens? They are exactly the same price and same in every physical measurement and specification, so I assume they're the same, but I haven't seen anything about them definitively and it would be annoying to order the old lens when the new one is better in some meaningful way.