Sandy Bridge is just the codename, of course, and now they're known simply as the 2010 Intel® Core™ Processor Family. The biggest innovations here are the 32nm manufacturing process on the company's second-generation high-k metal gate transistors (which sounds like a line from a Mass Effect weapon description, but allright, I'll roll with it), and Intel HD graphics integrated onto the 32nm die.
"The all new 2010 Intel Core processor family is the first to integrate graphics into mainstream PC processors. With Intel HD Graphics, the processors deliver stunning visuals and smooth high-definition video playback," the press release reads, "It's also the industry's first integrated solution to deliver multi-channel Dolby TrueHD and DTS Premium Suite home theater audio."
The new processors (the Core i7 and i5 variants, at least) also come with Intel Turbo Boost Technology, which allows cores to temporarily run at a higher operating frequency than the base one, but only "if it's operating below power, current, and temperature specification limits".
Expect to see these things in your local laptop and desktop population soon enough.