DAZ_Steve S. in the Latest News forum @ DAZ says this:

Hi there, I wanted to pop in and answer one of the burning questions in this thread regarding which files have been updated and are nescecary to redownload. The base application files are all that have been updated, by product these files would be:

Carrara 7 Pro:
PC:
ca_ap032_CarraraPro.exe
CarraraRenderNode.exe
MAC:
ca_ap032_CarraraPro.zip
CarraraRenderNode.zip

Carrara 7 Standard
PC:
ca_ap038_CarraraStd.exe
MAC:
ca_ap038_CarraraStd.zip

Carrara 7 Express
PC:
8956_1_CarraraExpress7.exe
MAC:
8956_1_CarraraExpress7.zip

Hope that helps.