Niels Laros, who turned 18 in April has opened his season with:
13:23.01
3:38.34
1:45.80
A big drop in his 15 is almost certain. Could be massive. Comparisons are often silly, but take, say, Nick Willis. His 800 and 5000 prs are 1:45.54 and 13;20.33, and they didn't come in the same year.
I wouldn't be surprised to see him make WC finals this year.