Long time in the making ... here we have our first Amahi 5.3 Release Candidate!
For details on how to test it, please see what's in it and how to test in that link above.
Notably, this is the first wider release of Greyhole (in beta) and app dependencies!
There are a fair bit amount of changes to the installer, so testing by installing from scratch will be best if you can do it!

Just to be clear - please do NOT use with critical data yet!
Now, some eye candy of what's also coming too:
http://bit.ly/bnLVmo (servers area)
http://bit.ly/aIthrk (philesight app for visualizing disk space usage)