Today I notice a small difference when you export/import using Datapump and you connect to a 11.2.0.4 database: there is the elapsed time at the end.
Both times I was using the binary from Oracle 11.2.0.4:
Export: Release 11.2.0.4.0 - Production on Sun Mar 22 21:07:25 2015
But the output is slight different at the end of the job:
Connected to: Oracle Database 11g Release 11.2.0.4.0 - 64bit Production ... Job "RMAN"."SYS_EXPORT_SCHEMA_01" successfully completed at Sun Mar 22 21:10:07 2015 elapsed 0 00:02:21
Or:
Connected to: Oracle Database 11g Release 11.2.0.3.0 - Production ... Job "RMAN"."SYS_EXPORT_SCHEMA_03" successfully completed at 21:07:43