We all know now that the MBPs will eventually lose the optical drive but I'm willing to bet my life that it will happen on the next refresh in as little as a couple of months.
The evidence?
Steve Jobs introduced the new MBA as having 7 hours of battery life but stressed the they were using much better, less generous battery tests so the jump is not from 5 to 7 hours, it's really DOUBLE the life of the old MBA.
Anandtech confirms this:
Notice how all the other numbers are close to Apple's advertised numbers. The 13" MBP comes in at 9:45 and is advertised at 10. The 15" MBP comes in at 8:11 and is advertised at 8-9 hours.
This shows that Anand's battery test is very similar to Apple's old test. Had the MBA used the old test, it could've been advertised at having 11.5 hours of battery.
I applaud Apple for using new battery tests that reflects real world usage but at the same time, they will look incredibly stupid if the new 13" MBP is advertised as having 6.5 hours of battery, a 35% drop. Apple would never do that. They would've only switched to new battery tests if they were confident they could at least match their old numbers on the new test.
So where would the new 13" MBP magically find 35% more battery? The only way would be to remove the optical drive. If people absolutely want one, they will tell them to buy a SuperDrive.
It fits in perfectly with Apple's MO.
1. They are famously known for removing technology the public still finds necessary (floppy, flash, etc.).
2. They refuse to support blu-ray because they believe optical media is obsolete.
3. They market the MBA as "the next generation of MacBooks" and have said "it's the future" and "all notebooks will look like this". Well, if the MBA is the next generation, why would anyone buy something last generation?
Apple will never release another notebook with a built-in optical drive. I'm sure of it.
The evidence?
Steve Jobs introduced the new MBA as having 7 hours of battery life but stressed the they were using much better, less generous battery tests so the jump is not from 5 to 7 hours, it's really DOUBLE the life of the old MBA.
Anandtech confirms this:

Notice how all the other numbers are close to Apple's advertised numbers. The 13" MBP comes in at 9:45 and is advertised at 10. The 15" MBP comes in at 8:11 and is advertised at 8-9 hours.
This shows that Anand's battery test is very similar to Apple's old test. Had the MBA used the old test, it could've been advertised at having 11.5 hours of battery.
I applaud Apple for using new battery tests that reflects real world usage but at the same time, they will look incredibly stupid if the new 13" MBP is advertised as having 6.5 hours of battery, a 35% drop. Apple would never do that. They would've only switched to new battery tests if they were confident they could at least match their old numbers on the new test.
So where would the new 13" MBP magically find 35% more battery? The only way would be to remove the optical drive. If people absolutely want one, they will tell them to buy a SuperDrive.
It fits in perfectly with Apple's MO.
1. They are famously known for removing technology the public still finds necessary (floppy, flash, etc.).
2. They refuse to support blu-ray because they believe optical media is obsolete.
3. They market the MBA as "the next generation of MacBooks" and have said "it's the future" and "all notebooks will look like this". Well, if the MBA is the next generation, why would anyone buy something last generation?
Apple will never release another notebook with a built-in optical drive. I'm sure of it.