Hi,
I'm afraid we need to remove the Webkit-related plugins (Webhelper, Markdown Preview) from the Windows installer.
This is because Webkit itself is going to be removed from MSYS2: https://github.com/Alexpux/MINGW-packages/issues/4318
For the upcoming release we could ship the previous version of Webkit along with the locally cached old version of ICU (i.e. we will ship ICU 61 *and* 62 in the installer).
But I personally would prefer removing the plugins from the Windows installer immediately for the reasons mentioned in https://github.com/Alexpux/MINGW-packages/issues/4318#issuecomment-436443226 and to prevent us from shipping two ICU versions which bloats the Windows installer even more.
If there are no objections, I will remove all Webkit-related settings from the Windows installer next week.
Regards, Enrico