
Are the following mentions coreferent?:
<m> refresh </m> in The firm announced a widely expected refresh of its 17in MacBook Pro, with a battery that the firm said will offer eight hours of operation, but which is not removable from the case. Apple has also introduced a separate chip that monitors the power used by each cell and adjusts the charging current entsprechend, which the firm says extends the life of the battery. 
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<m> refresh </m> in Apple's MacBook line, particularly certain portions of it, have been overdue for a refresh. Today, it finally got it. During the opening keynote of Apple's WWDC event Monday morning, Apple's Phil Schiller unveiled updates to both the MacBook Air and the MacBook Pro, as well as an entirely new next - generation MacBook Pro with a Retina Display. 