I don't know what went wrong but I didn't see the announcement here in the user list, nor the announcement for the previous release. And at least for 2.4.2 neither did the list archive https://lists.macports.org/pipermail/macports-users/2017-October/date.html
> Am 12.10.2017 um 10:28 schrieb Chris Jones <jon...@hep.phy.cam.ac.uk>: > > > >> On 12/10/17 09:27, Chris Jones wrote: >>> On 12/10/17 00:04, Dave Horsfall wrote: >>>> On Mon, 9 Oct 2017, Dave Horsfall wrote: >>>> >>>> Now that MacPorts is on 2.4.2, is High Sierra now fair game? Is it likely >>>> to be even more bloated and slower on my old 4GB MacBook than before? >>> >>> Well, that generated a fascinating discussion, but it didn't answer my >>> questions... If there was an announcement about MacPorts 2.4.2 then I >>> guess I must've missed it. >> Yes, you did miss it. The announcement was sent out on the 8th Octo to both >> the user and devel lists. Search for the message "MacPorts 2.4.2 has been >> released" which I guess is clear enough ;) > > Correction... It was sent to the users and *announce* mailing lists.