( CNN ) -- Apple 's Worldwide Developers Conference , the annual gathering where the secretive company hosts folks who make a living writing software for its products , kicks off today . And while the event is designed around presentations to help developers , its keynote address has also become an opportunity for Apple to roll out new products not just to developers , but to the world . Two iPhones and several Macs have had their coming-out parties at WWDC , along with a host of operating-system overhauls . Which raises the obvious question : What will Apple announce at its keynote , set for 1 pm ET ? Speculation has run rampant , as it does every time the Cupertino , California-based computing giant moves a muscle . But some of the guesses make more sense than others . Here 's a look at some of the most credible reports , with our take on the odds of them being even vaguely true . Software updates . This one is n't as sexy as a big product unveiling , but software is the bread-and-butter of WWDC . And there might be some drama here , yet . It 's about time for a first look at iOS 6 , an update of the mobile operating system that runs iPhones , iPads and Apple 's other Web-enabled mobile devices . The developers in attendance will no doubt hang on every detail . But the most high-profile change is expected to be Apple 's announcement that it 's replacing Google Maps with its own mapping app as the system 's default . Apple and Google have obviously squared off in the mobile space , with more smartphones now running Google 's Android system , even though the iPhone remains the single most popular phone . Supplanting Google 's popular maps on its millions of mobile devices would be a big blow in the rivals ' ongoing slugfest . Looking to get the jump on Apple , Google announced new features to Google Maps on Wednesday , including more 3-D images and the ability to use the product even when you 're offline . Interestingly , Google only announced the update for people using its own Android mobile operating system . Developers also may get a closer look at OS X Mountain Lion , the Mac operating system scheduled for release this summer . Odds : Bet the farm . Refreshed Macs . Of the nonsoftware speculation , this one feels like the most likely -- and could be pretty significant . For one , It 's been a year or more since Apple 's major desktop and laptop models have been updated . The iMac got refreshed in May 2011 , the MacBook Pro 's last overhaul was February 2011 and MacBook Air 's latest model rolled out in July of last year . Second , apps have started showing up in the Mac app store with updates saying they 've added `` retina graphics . '' That 's the term Apple uses for its high-resolution displays on newer iPhones and iPads and suggests that Macs might be getting similar treatment . Plus , the online Apple Store was down Monday morning , suggesting that new hardware is on the way . Apple followers have already been passing around reports that the company could unveil a 15-inch Macbook Pro in a big rollout that might include most of its other Mac products . Announcing now would mean that Apple would have fresh products to push before back-to-school and off-to-college time , not to mention the holidays . Odds : Get your chips on the table . Apple TV . A television set from Apple has been the most elusive and speculated-about piece of vaporware in the tech world for the past year . Whether it 's been snippets of info from Apple 's supply chain , suggestive notes from retailers or the always talkative `` unnamed sources , '' most observers seem to agree it 's just a matter of time before the company goes from offering a set-top box like Roku , Boxee or TiVo to selling its own TVs . Could Monday be the day we finally see it ? Maybe ... but it does n't feel likely . Instead , look for another update to the Apple TV system , the little box that lets users stream movies and other content from iTunes to their TVs . Such a move could be a step towards Apple launching the TV set itself . One report says the company will introduce a kit for third-party developers who want to build apps for the Apple TV device . By Apple standards , Apple TV has n't been a big seller yet . And things are getting more interesting in that space . Last week , Microsoft announced Xbox SmartGlass , a system that will synch that gaming and entertainment console with mobile devices like iPads and iPhones . Odds : Even money at best . A new iPhone . As of this writing , longshot Guyana Star Dweej is getting 60-to-1 odds to win Saturday 's Belmont Stakes . If those odds seem way too good for you , bet on a new iPhone be unveiled Monday . Yes , new iPhones were unveiled at WWDC in 2009 and 2010 . But last year 's iPhone 4S did n't hit the market until October . It would be out of character for the company to roll out another one eight months later . Sorry , folks . Check back this fall . Same goes for the iPad and iPods . New iPods usually get their own fall events , and the `` new iPad '' is barely three months old . Even Apple does n't crank out updates that fast . Odds : Slim , meet none .
Apple 's developers conference ##d off with a keynote at 10 pm ET today . Apple will announce features of iOS 6 , its operating system for iPhones and iPads . Company could also unveil its replacement for Google Maps on iPhone , iPad . We will also see upgrades to the Apple TV app that streams iTunes TV .