Apple Stock 5 minutes before WWDC

5 minutes before the WWDC Steve-Note and Apple stock is at 183.74, down about 1% compared to Friday's close, but it was down close to 2% earlier this morning. Will we see a big pop during and after the Steve-Note? Also, what companies will get a boost from today's announcements? A GPS company perhaps (I own Garmin), an iPhone app company?