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Yes, the company's signature desktop PC has a speedier set of guts and the new Thunderbolt connector. But has Steve Jobs's absence forced Apple to scale back on innovation? Apple just upgraded its iMac signature desktop PC with a speedier set of guts and the new Thunderbolt connector.

Barnes & Noble just revamped its Nook tablet with a specially-tweaked Android makeover and a curated app store.

In its ongoing quest to keep pace with BMW’s famously quick “M” cars and Audi’s high-performance “S” and “RS” models, Mercedes-Benz has—via its in-house speed shop, AMG—taken the sledgehammer approach: Add power, power, and more power. And the entry-luxury C-Class range has seen its share of AMG-engineered overachievers, including the ...

In its ongoing quest to keep pace with BMW’s famously quick “M” cars and Audi’s high-performance “S” and “RS” models, Mercedes-Benz has—via its in-house speed shop, AMG—taken the sledgehammer approach: Add power, power, and more power. And the entry-luxury C-Class range has seen its share of AMG-engineered overachievers, including the ...