Most notable with the Archinstall 3.0.2 point release is adding Wayfire as another desktop install option. Wayfire is the wlroots-based Wayland compositor that has found use by the Raspberry Pi and various other environments as a lightweight and highly-customizable Wayland compositor.
Archinstall 3.0.2 also has Btrfs improvements and fixes, updated partition flags, a wide variety of code refactoring, reworked manual partitioning, dropped the ReiserFS file-system option since it's been deprecated upstreamed and since removed in the very recent kernels, and a variety of bug fixes.
More details on the Archinstall 3.0.2 release can be found via the GitHub announcement . The updated Archinstall can be fetched via Pacman or found in next month's Arch Linux ISO refresh for conveniently installing Arch Linux on new systems.