These roles are applicable at the domain level (i.e., there is one of each for every domain in a forest): The PDC Emulator (Primary Domain Controller) - This role is the most used of all FSMO roles and has the widest range of functions. The domain controller that holds the PDC Emulator role is crucial in a mixed environment where Windows NT 4.0 BDCs are still present.
iPod touch 7th Generation Release Date. It has been noted that iPod touch 7th generation release date will be in the mid (July-September) 2017. The new iPod touch 7G release is expected to be the biggest iPod launch that apple has ever done.
iPhone 7S Release Date. Apple is one of the tech companies that use to follow the yearly product release cycle. Therefore, iPhone 7S Release Date is expected in the Q3 of 2016, most probably in the month of October, 2016.