Phase One has just posted a minor maintenance release, version 5.0.2. (download)
The only significant change in this version is a bug-fix for a rare error involving LCCs applied to EIP files.
As of today we recommend you only download/install the update if you use or might use LCCs in conjunction with EIP files. We will investigate further to see if there are any other benefits.
If you do update we recommend, as we always do, to completely uninstall the previous version of the software prior to installing the new version (instructions on uninstalling Capture One).