Here is the first beta of Blocs for Mac V5.2.3. This build introduces a new publishing feature that I hope will address some of the frustrations and issues with the preview path.
Server Path Finder
As long as you have your server credentials added, you can now log onto your server from within Blocs and select an upload path.
Obviously there are many types of hosting and server configurations, so this feature may not work as intended. Testers should pay close attention to the path value inserted into the field when a server location is selected.
Project Loading Speed
For anyone who is using a large project, you should see a little speed boost when it comes to opening your project (Average of a 25% faster loading speed when opening a 1GB Blocs project 
).
Anyway, happy testing 