There are no visual changes to the app with the update to alpha5.2. However, according to the Developer, there were fixes to following three bugs:
Fixed dealer card show timing after double down (Bug #39)
Fixed card counts with Insurance/Surrender Prompts (Bug #39)
Added Back Button to Themes Menu (Bug #38)
The update is available in the Installer.app through the Ste Packaging source. Below is the one screenshot! :)