Next week marks Apple's (Nasdaq: AAPL) annual Worldwide Developers Conference, or WWDC. The company has typically used the event as a staging ground for various hardware or software announcements.

A new lineup MacBook Pros should make their debut, with this year's update being the most significant refresh in years. The new laptops are likely to be entirely redesigned, and there's a chance that we might even see Cupertino bring high-resolution Retina Displays to the Mac family for the first time. Intel (Nasdaq: INTC) will be inside with its newest Ivy Bridge processors, and NVIDIA (Nasdaq: NVDA) has seemingly scored the discrete graphics processor slot with its new Kepler architecture.

On the softer side of things, Apple will probably detail the next major iteration of its mobile operating system, iOS 6. iCloud should see some improvements, potentially with a new Instagram-esque photo-sharing service, and the Mac maker will probably give us a firm timeframe on when to expect the next desktop operating system, OS X Mountain Lion.

According to a recent report from 9to5Mac, the MacBook Pro family isn't the only offering that's going to get some makeover treatment. The Mac-centric site's sources say that Apple is looking to update at least four of its five existing Mac families.

Macs

Source: Apple. Current Mac lineup.

The MacBook Air and iMac families are also likely candidates for a refresh, as two of Apple's best-selling product groups. The Mac Pro is aging and has been relatively neglected for nearly two years, so it's long overdue for some attention.

As a side note, Apple might also launch a few new accessories, according to the report. These could be anything from peripherals to wireless networking accessories.

Apple typically updates its Mac families one at a time, so updating nearly its entire Mac lineup at once would be a pretty big deal. A move like that would undoubtedly be a growth catalyst for Apple's Mac segment, even as Mac sales have outpaced the broader PC market for 24 consecutive quarters.

By the looks of it, Apple's next major Mac catalyst is right around the corner, and it's going to be huge, which is just one reason our senior tech analyst is convinced Apple is still a buy. He spells out all the reasons he still thinks Apple has plenty of room to run in our new premium research report.

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