From the Ulysses announcement:
The next Ulysses version will ship with greatly improved code blocks.
You’ll have to mark up the beginning of a code block only once to let it span as many paragraphs as needed. No more backtick fatigue! Also, we revamped the appearance of code blocks in the editor to make them easier to distinguish from the body text: they’re set in a monospaced typeface (what else would make sense for a code block?) on a colored background (depends on theme). What’s more, the new code blocks will import from, and export to GitHub-style fenced code blocks. Oh, and you’ll be able to use them in external folders as well. Yay!
I really like Ulysses, but code blocks are the number one reason I stopped using the app. The current system is clunky and annoying so I have a lot of high hopes for this change. It does worry me how this is described and I’m assuming it isn’t going to support traditional three tick markdown code blocks, but instead some special block.