According to 9to5Mac four new Mac lines will be announced at WWDC (World Wide Developers Conference) this Afternoon (1PM EST). In addition, more detailed information has come in specifically concerning products to be launched.
For the first time in 2 years the big honking desktop for professionals will get an update. This new machine will come in three configurations:
Normal configuration: 3.2GHz quad-core processor, 6GB of RAM, 1TB hard drive, and the ATI Radeon 5770 graphics chip.
Normal configuration: 2.4GHz 12-core processor, 12GB of RAM, 1TB hard drive, and the ATI Radeon 5770 graphics chip.
Server configuration: 3.2GHz quad-core processor, 8GB of RAM, Two 1TB hard drives
As expected you should be able to have extensive ordering options to add / modify given configurations.
Various sources believe that Apple will be announce both next-generation MacBook Pros with a thinner design and Retina Display plus spec-enhanced MacBook Pros with the current design.
It is also believed that the MacBook Pros with Retina displays will come with a 15-inch display and that Apple will release spec-enhanced 13 inch and 15 inch MacBook Pros with the current design.
According to a 9to5Mac source, here are the details:
13.3 inch: 2.5GHz dual core processor, 4GB of RAM, 500GB hard drive
13.3 inch: 2.9GHz dual core processor, 8GB of RAM, 750GB hard drive
15.4 inch: 2.3GHz quad core processor, 4GB of RAM, 500GB hard drive
15.4 inch: 2.6GHz quad core processor, 8GB of RAM, 750GB hard drive (BTO upgrades to 2.7GHz quad core and 1TB HD will be available)
There are still no details on the Retina Display MacBook Pro and the new MacBook Airs, but 9to5Mac still believes that they will make an appearance at WWDC.
Other product launches:
Updated AirPort Express
New Optical-drive-less USB SuperDrive
Updated MagSafe connector/adapter
New Thunderbolt Ethernet adapter
Although there is strong evidence that they are in at least conceptual development of an integrated Apple Television, there are no specific indicators that they will be launching any new Apple TV related hardware.
Although new iPhone parts have been floating around the internet, it is not expected that Apple will use this time to launch a new phone, rather focus on iOS6 to prep software developers for the next release.
Mac Product details via 9to5Mac