I just downloaded it again on a different machine altogether using the link from Rolf, and it still gives me the November 2017 version when installed on different machine.
Can someone who has the correct version, (April 2018), change the name of it slightly and make it available to me in a message or whatever?
The only conclusion is that tmy ISP is caching the old file. Strange though, I haven't seen anything like that in years... with an ISP that is.
Just to be clear, I have downloaded that file on two different OS/2 machines and one Windows machine using different browsers, always with the same problem.