San Francisco ( CNN ) -- Faster , thinner laptops with hi-res screens . FaceTime video chatting over cellular networks . And a smarter Siri . But no upgrades to Apple TV -- at least , not yet . That , in brief , is what Apple will be rolling out to its users over the next six months . The company announced these updates , and a bunch of other significant if not surprising news , during a keynote presentation Monday kicking off its annual developers ' conference . Here are the highlights : . Refreshed MacBooks . The most impressive new product announced Monday may be a new MacBook laptop with a high-resolution display that Apple says will contain 5 million pixels -- 3 million more than an HD television . `` The new MacBook Pro is the most advanced Mac we have ever built , '' said Apple CEO Tim Cook . The new `` retina display '' MacBook Pro measures 15.5 inches across and contains an Intel quad-core i7 processor . It will feature up to 16GB of memory and up to 768GB of internal flash storage , Marketing Vice President Phil Schiller told attendees . It goes on sale today . Schiller said the new computer 's display -- similar to the one in the company 's newest iPad -- is the highest-resolution display of any notebook , or simple laptop , on the market . Users will get up to 7 hours of battery life , he said . The laptop is about .7 inches thick and weighs less than 4.5 pounds -- about the size and weight of a MacBook Air , he said . Prices for the new MacBook Pro will start at $ 2,199 for a model with 8GB of memory . Schiller also unveiled other MacBook Pros without high-res displays but with processors he said will be 60 % faster than current models . The 13-inch model will sell for $ 1,199 to $ 1,499 , depending on storage , while the 15-inch will be $ 1,799 to $ 2,199 . They start shipping today , he said . Schiller also introduced MacBook Air laptops with faster , new-generation Intel core processors . Prices for the 11-inch MacBook Air range from $ 999 to $ 1,199 -- $ 100 less than before -- while the 14-inch is $ 1,199 and $ 1,499 . They also become available today , which explains why Apple 's online store was down Monday morning . There was no word Monday on retina-display screens for the MacBook Air . `` The products we make , combined with the apps that you create , can fundamentally change the world , '' Cook told developers in closing the keynote . `` And , really , I ca n't think of a better reason for getting up in the morning . '' iOS 6 and Siri . Apple also announced Monday that an improved version of voice-controlled `` assistant '' Siri is coming to iPhones -- and , for the first time , to the iPad -- as part of its newest mobile operating system . A more efficient Siri will be part of iOS 6 , the next generation of the Apple system that runs iPhones and iPads . That system , which enhances mobile devices with more than 200 new features , is expected to be available this fall . Siri is going international : In addition to English and a handful of other languages she will now process Spanish , Italian , Korean , Mandarin and Cantonese -- a nod to Apple 's growing popularity in China . Users will be able to ask Siri to update their status on Facebook , post to Twitter or launch an app . Siri also is becoming more of a sports fan . She will deliver scores and stats , and as seen in an onstage demo can even tell you which basketball player is taller -- Kobe Bryant or LeBron James ( it 's LeBron , in case you 're wondering ) . In other iOS 6 news , Apple announced that its FaceTime video-chat feature for newer iPhones and iPads will work over cellular networks , not just Wi-Fi . As expected , Apple also is developing its own GPS-based mapping application to replace Google Maps in iOS 6 . The product will work with Siri to offer voice-controlled , turn-by-turn navigation , letting motorists use it to guide them through unfamiliar neighborhoods . `` In iOS 6 we have built an entire new mapping system from the ground up . And it looks beautiful , '' said Senior VP for iOS Scott Forstall . `` We 're covering the world . '' The Apple maps will include a local search feature , integrated with Yelp , that already has 100 million business listings , Forstall says . Apple also will enhance its maps with a real-time traffic application that will include anonymous , crowdsourced information from users . Apple 's maps app also will include a Flyover feature , which offers interactive 3-D views of popular cities.. Apple also said the next generation of its OS X operating system for laptops and desktops , dubbed Mountain Lion , will be available next month for $ 19.99 . Mountain Lion will contain more than 2,000 new features , including iMessages , speech-to-text dictation and predictive `` smart search '' in the Safari browser . The new Mountain Lion system also adds something called Power Nap , a new feature that keeps your laptop up to date while it sleeps by automatically refreshing mail , contacts and other apps . Thirty billion apps and counting . The event runs through Friday and is the company 's first World Wide Developers Conference ( WWDC ) since co-founder and longtime chief Steve Jobs died last fall . As usual , Cook began the keynote with a batch of new stats about Apple 's impressive growth . The App Store now has 400 million accounts -- the largest number of accounts with credit cards anywhere on the Internet , he said . Some 650,000 apps are now available . `` Customers have now downloaded an astounding 30 billion apps , '' Cook said . Many observers had expected Apple to announce upgrades to its Apple TV , the little box that lets users stream movies and other content from iTunes to their televisions . Experts had said such a move could be a step towards Apple launching its own TV set . But Apple made no mention of its TV product Monday . Apple has sometimes used past WWDCs to unveil new iPhones . But because its most recent model , the iPhone 4S , launched only eight months ago , most observers do n't expect the next one to come until the fall .
Apple on Monday unveiled a new MacBook Pro laptop with a high-resolution screen . The company also announced improvements to its Siri voice `` assistant '' CEO Tim Cook led the keynote at Apple 's annual developers ' conference . Apple also unveiled upgraded MacBook Airs plus operating systems with new features .