Tested with beta4 and using Swedish. On the "Date and Time" configuration screen most messages are shown untranslated, despite both firstboot and redhat-config-date being fully translated. The following messages are untranslated: "Date" "Time" "Current Time :" "Hour :" "Minute :" "Second :" "Network Time Protocol" "Your computer can synchronize its clock with a remote time server using the Network Time Protocol." "Enable Network Time Protocol" "Server:" (also, some of these seem to be lacking mnemonics).
The date screen is really just redhat-config-date getting it's UI pulled into the firstboot framework. However, redhat-config-date should be fully translated. There may be some weird domain overlap problem since what you're seeing is actually two programs pulled into the same framework. I'll investigate...
Related to the domain overlap problem.
*** Bug 70096 has been marked as a duplicate of this bug. ***
Should be fixed in firstboot-1.0.0-2 and redhat-config-date-1.5.2-4
Fix confirmed with redhat-config-date-1.5.2-5.