I installed JBoss integration for Eclipse:
But when I try to add a new server by going to the Servers view -> right click -> new -> Server I get no option for Wildfly 14:
I downloaded 14.0.1. How do I add it?
Pick Wildfly 13
for now, and wait for the update of JBoss Tools.
Wildfly 14 is supported in JBoss Tools 4.9.0.AM3 development version,
see release notes
You can install this version in Eclipse (first uninstall the earlier one), however this version may be unstable.