Apple's Siri-based dictation feature, found in the iPad, looks set to be included in Apple's Mountain Lion OS X.
9to5Mac unearthed a (currently non-functional) Start Dictation keyboard shortcut – holding down both Command keys – in the developer beta of Mountain Lion.
Apple also looks to be bringing an offline Safari Reading List feature to Mountain Lion – according to GearLive, who stumbled across a message stating that "Reading List articles are available for viewing while you are offline."