Plasma Mobile 21.07 brings updates to the Shell with a much-improved top panel (which makes the Shell more responsive overall), the Dialer with better support for international numbers, support for hardware keyboards, and the ability to display the right contact name when receiving a call, as well as the Qrca QR reader, with support for multiple cameras and the ability to import barcodes for transport tickets into the KDE Itinerary app.
The Kasts podcasting app has been updated as well in this release with many new features. These include the ability to resume podcast episode downloads, revamped playback speed settings, a new Discover page that lets you search https://podcastindex.org for podcasts, the ability to check for a metered connection, the ability to highlight the currently selected page in the main menu, and new settings to set up handling for played episodes.