Do you not remember when Java itself came out?<p>The positive feelings ring very false to me. Kotlin has announced a lot of features long before they were delivered, and taken a lot longer to deliver a working language than they originally claimed. It&#x27;s the old &quot;two types of languages&quot; - most languages sound good when you talk about their features, it&#x27;s only when you actually use them that the negatives become apparent.<p>I don&#x27;t know anyone who&#x27;s actually used both Kotlin and Ceylon and prefers Kotlin, and Ceylon is actually more mature (1.2 released recently, IIRC). But since King only advertises features that are actually implemented and release dates he can actually make, there&#x27;s a lot more hype for Kotlin.