Public beta testing of Keyshape has been going on for few weeks. Few shortcomings have already been discovered and fixed. Support for older macOS was added and exporting has been made simpler.
There are also other plans to improve exporting. Currently, SVGs can be exported with CSS animations. However, only the latest web browsers can play back those animations. The plan is to add support for exporting Javascript based SVG animations so that they run in older browsers, such as Internet Explorers.
If you want to get notified about new versions, then follow the tweets. New versions will be available as free downloads until the beta testing ends.