The following is a round-up of news likely to affect stock prices today:
Apple (AAPL) plans to unveil a new gadget Wednesday that many believe will be a tablet-style computer -- a one-piece computer with a big touch screen, probably larger than an iPhone but smaller than a laptop. While Apple has managed to keep most details under wraps, rumors have circulated widely. Not only that, but McGraw-Hill (MHP) CEO confirmed the device in a CNBC interview, saying "it's just going to be terrific." AAPL shares were up 1% ahead of the bell.