The KDE Applications 19.04 release announcement (read it if you haven't, it's very complete) mentions some of the applications are available at the snap store, but forgets to mention flathub.
Just wanted to bring up that there's also some of the applications available in there https://flathub.org/apps/search/org.kde.
All the ones that are released along KDE Applications 19.04 were updated on release day (except kubrick that has a compilation issue and will be updated for 19.04.1 and kontact which is a best and to be honest i didn't particularly feel like updating it)
If you feel like helping there's more applications that need adding and more automation that needs to happen, so get in touch :)
