Normally we release about once a week, but this release has been pushed forward since there were a couple of annoying issues introduced in to r75, especially with exporting. Let us know if you have any other problems.
New this build is also the new Preview on LAN feature! This is a really cool way to test on phones and tablets, by instantly previewing on an iPad over your Wifi for example. See the tutorial for more information on how to set it up. This is also a license-only feature.