Oracle APEX Release 18.1.0.00.45 was released on May 24, 2018.
The full download is available below.
Oracle APEX 18.1 is fully supported through Oracle Support Services on all Editions (EE, SE2, SE, and SE1) of the Oracle database, 18.104.22.168 or higher with a valid Oracle Database Technical Support agreement.
APEX 18.1 can also be used with Oracle Database 11g Express Edition (XE), but is supported only through the OTN discussion forum, and not through Oracle Support Services. For more information on upgrading APEX within Oracle XE go here.
We support installation on the following platforms: