I am downloading CF2018 30-day free trial from here
Download Adobe ColdFusion free trial | Adobe Coldfusion (2018 release)
Is it still like its been in the past where after the 30-day trial it automatically goes to a single user version?
Yes. It will become the Developer version. If I recall correctly, the Developer version allows about three different IP addresses for clients, but it's intended to be used by a single developer.
Dave Watts, Fig Leaf Software
Thank you Dave!
To add to what Dave Watts said, the developer version has all the features and robustness of the paid version, but things like PDFs created by CF will be watermarked as "created by ColdFusion Developer Edition".
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Thank you Wolf!