Samsung's (SSNLF, SSNGY) Galaxy S5 is the first smartphone to support 802.11ac 2x MIMO, a technology that doubles theoretical peak download speeds to 867Mbps compared with regular 802.11ac (supported by the Galaxy S4).
MIMO support is likely a positive for Samsung combo chip supplier Broadcom (BRCM +0.6%). Broadcom just happened to announce its first 802.11ac 2x2 (antenna) MIMO smartphone combo chip this morning.
The S5 is also the first smartphone to support phase-detection autofocus (found in SLRs), and among the first to support on-the-fly HDR processing. Samsung claims the S5's auto-focus time (0.3 seconds) is unmatched.
Along with the S5, Samsung is launching a companion fitness tracker called the Gear Fit. The device can receive notifications from Samsung smartphones, and will compete in a crowded market headlined by Nike's FuelBand.
The Verge isn't impressed by the S5's fingerprint scanner, calling it "quite unreliable and virtually impossible to activate when holding the phone in one hand." It offers a more positive take on the device's heart monitor.