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iFixit, which is well-known for these types of things, has been quick in taking apart Apple’s newly updated MacBook, and offers a number of images documenting the process and findings.

A few items iFixit has found during its disassembly of the new MacBook include the following:

• There is no external indicator of battery charge state.
• There is no infrared port, meaning that the new model is incompatible with Apple Remotes.
• The integrated battery offers only 9% more capacity than on previous models (60 watt-hours vs. the previous 55), although Apple claims an increase in battery life from 5 to 7 hours, suggesting that the new model is slightly more energy efficient. The new batteries are significantly lighter than those used in the previous generation, offering a power-to-weight ratio that is 23.5% better than before.
• The hard drive is slightly more difficult to replace than on previous models, but can still definitely be done.
• The apparently increased rigidity in the latest model appears to come with the use of an aluminum sheet (covered with a rubberized coating on the exterior) for the bottom case and other structural supports within the body of the MacBook.
• The Bluetooth antenna is routed into the display housing, likely improving range compared to previous models that placed the antenna in the body of the machine above the optical drive.

iFixit also put together a video of the disassembly and teardown process, which can be seen below:

Via [iFixit]