You will still have to download and install new versions, like when 0.94 comes out, and for the forseeable future. The hotfixer will just kick in when we botch a plugin or something, like with the platform movement here. The updater has been coded to be able to auto-install new builds, but I'm a bit worried if it goes wrong it will nuke every installed copy of Construct in existance! So new builds as usual for now.