A report from 9To5Mac in April claimed that Apple will be bringing new power-user features and core elements from iOS to the Mac with OS X 10.9.
It's been more than a year since Apple surprised developers and analysts by debuting a preview of OS X Mountain Lion, then announcing that it was shifting to an annual release schedule for its Mac operating system.
We've been left wondering where the next operating system is, but it looks like we won't have to wait much longer.
We say: very likely
New Mac Pro
We could also see the launch of a new Mac Pro at WWDC 2013. Apple CEO Tim Cook has already revealed that a new Mac Pro is in the works at the company.
In an email to an Apple customer in June last year, Cook said that professional users shouldn't worry, as Apple is working on "something really great for later next year."
Apple was forced to stop selling its Mac Pro in Europe as of March this year, as it no longer complies with safety regulations, so it's likely that the company will want to get a professional offering back into our Apple Stores as soon as possible.
We say: likely
New MacBook Pro and MacBook Air
KGI Securities analyst Ming-Chi Kuo, who has strong track record for predicting Apple product launches, has said that he believes Apple will unveil updated MacBook Pro and MacBook Air models at WWDC this year, which he expects will feature Intel's new Haswell processors.
While Kuo thinks that spec boosts are likely for Apple's MacBook lineup, he doesn't believe we'll see a MacBook Air with Retina display shown off at WWDC this year.
Previously, Kuo had predicted that Apple would ditch its non-Retina MacBook Pro in favour of an all-Retina MacBook lineup, but the analyst now thinks that Apple will keep the non-retina models for now.
We say: likely
ETrade Supply and DigiTimes sources claim that Apple is going to launch a low-cost iPhone this year, and analysts at JP Morgan think it will cost $350-400 (£226-£259), but there is no definitive agreement over whether we'll see the release of this cheaper iPhone earlier or later in the year.
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