A Google spokesperson has announced that they plan to kill 30-second unskippable ads on YouTube in 2018. Instead, the company will focus on providing a better ads experience that works for both users and advertisers. This doesn't mean that the unskippable ads are going away.
YouTube will still offer 20-second and 6-second Bumper ads that were launched last April. The latter ads will probably be promoted more heavily in the year ahead.
"We're committed to providing a better ads experience for users online. As part of that, we've decided to stop supporting 30-second unskippable ads as of 2018 and focus instead on formats that work well for both users and advertisers," Google said.