Microsoft C.E.O. signals change with Office for iPad

Microsoft Corp's new Chief Executive Officer, Satya Nadella, finally unveiled Office for Apple Inc's iPad in a polished debut that set him apart from his energetic predecessor while signaling his plans to make mobile apps the top priority at the world's largest software company.
Background:
Microsoft C.E.O. signals new course with Office for iPad [Reuters]
Microsoft to offer Office for iPad, maybe a bit late [NYT]