Thank you Spencer for pointing this out to me...
It looks like the upcoming Sydney Opera House Architecture set is going to have trans-black plates!
For those who don't know, trans-black plates have only been made in the 1x2 dimension and we haven't seen them since 2003 when they were in two Star Wars mini model sets. Thankfully though, this one has them! Obviously they could be 1x1's, but either way, I'll be giving a few of my models minor makeovers after I get some of these!