Good to see some fresh faces. Saudi Arabia, Poland, Egypt, Iceland and Serbia all weren't qualified four years ago. And there will be at least two more qualified teams who also weren't (most likely Tunisia and Senegal).
Congrats to Serbia. I hope to see Milinkovic-Savic at the World Cup. Serbian coach seems to not rate him very much.
Sorry for Slovakia, they were also a bit unlucky with late goals against them during this campaign.
And what a fairytale for Iceland. Has to be by far the smallest World Cup nation ever by population.