Will New Chunks Contain New Blocks?

I want to start a server with some friends ASAP, but there's one problem: I also want the aquatic update stuff.

"All of these updates have been, or are set to be released in Q2 2018." So, I can either wait for a month at max (if this estimate is right), or I can start now.

So here's my question: if I start it now, and don't explore the ocean too much, will I get all the new blocks generated in new chunks?


If you update your server after the release but keep the same world, new chunks will generate the new content.