Ubuntu Server 20.04 LTS

When is Ubuntu Server 20.04 LTS will be released?

JUNE 2020.

According to the release frequency and previous history... Canonical (the company behind Ubuntu) has been releasing one version per year. For example, as of this writing 17.04 was released in June 2017. Going with this assumption, it is safe to assume 20.04 should be release around JUNE 2020.

What is the Code Name / Project Name for Ubuntu Server 20.04 LTS?

As of today (September 13, 2017) no name has been selected for Ubuntu Server 20.04 LTS.
If you would like to participate in naming or help suggest a name you can go to this web page:

https://wiki.ubuntu.com/DevelopmentCodeNames

What is the difference between LTS and non-LTS server?

LTS stands for Long Term Support. For Canonical servers LTS means the product will be supported for at least 4-years!  For Ubuntu Servers the LTS series are the servers with version ending in xx.04 such as 16.04, 17.04, 20.04 and so forth.

Ubuntu Release Cycle

Click here to see Ubuntu Release Cycle