A "corporate event" scheduled for Monday, June 28 to Friday, July 2, 2010 has set the internet speculation level to red, as it sounds like the only Moscone Center reservation capable of being next year's Apple World Wide Developers Conference (WWDC) -- the event whose keynote has for the last two years featured the introduction of new iPhone hardware.
In 2008 Steve Jobs held up the iPhone 3G (1,2). In 2009 Phil Schiller showed off the iPhone 3GS (2,1). Jobs is back, 4th generation iPhone (3,1) rumors are progressing right on schedule, so... Yeah, we're excited. (And who knows, maybe an iTablet won't be as mythical by then either?)
Apple officially announced WWDC dates in March. Apple also typically holds iPhone Software Sneak Preview Events in March. We're just saying... 2010 is almost here. Bring the future!