It has a nice homepage and good examples but what would a language like this provide over something like Kotlin? Also, I had to dig down into the homepage to find out that it compiled down to JVM byte code.
There's not a huge difference between the syntaxes, but IMHO Ceylon integrates better with the general JVM ecosystem. It has an excellent module system and works well with OSGi too. Ceylon + Vert.x is a powerful combo.