What will Apple do with new MB or MBP? I am talking about possible June release.
1 aluminum. Not big deal for MBP- it is made from it anyway.
2 smaller/slimmer. As you have seen everything redesigned comes smaller and slimmer (at least portables). I think screen sizes will be the same, so width will remain the same. It means laptops will be slimmer but not likely smaller in a width sense. MB and MBP might be smaller in depth. In any case we will see case redesigns. Hint how MB and MBP will look is similar to MBA. MB might be made somehow cheaper way, because it is least expensive Apple laptop. MB or MBP will remain bigger and thicker and heavier than MBA. See post 11 HOW MB and MBP might achieve thinness.
3 Blu-ray. I don't think it will come in the nearest future. Even so, MB will be the last model to get this option. Reason is very simple- price. Even Apple will not dare to charge outrageous prices. Besides Apple likes uniformity- similar options are available on all Apple Macs (superdrive).
4 Fingerprint readers are least likely option (ever!) to be implemented. Reason is very simple- Apple touts to be more secure than windows. The minute they put fingerprint reader on their product it becomes a Dell!
5 GPS. Not likely. Apple didn't put GPS in iPhone, the most likely product to get that, so it is very unlikely to get that in a laptop. It might get similar solution as ipod touch (because laptops will lack cellphone service). So software addition, but not hardware.
6 Solid state HD. They still in developing phase. Still to expensive, still too small in GB to be implemented in MB or MBP. Unless capacity will increase to 200 GB very soon (in one month) it will be not available. I think MBP is more likely candidate for solid state HD. To offer something less than 200 GB is an insult. Why MBA has one? Simply because size. It has ipod size HD, so not many options (capacity vise) available even with spinning plates inside vs solid state ones.
7 video card. It is likely to see MBP with new video card. MB is not likely to get one because it doesn't need one.
8 Display upgrade. Might be just better resolution, led option, nothing very exciting.
9 wireless. Somehow better implemented.
10 battery life should improve because of less power hungry processors.
11 Ports. Because of possible slimness we might see less ports on MB and MBP. On MB one USB port and microphone jack might become extinct. As well as Firewire 400 on MBP. MBP and MB might get rid of DVD drive entirely (not very likely, but possible. If that will happen, then both MB and MBP will get rid of it). It is only known and most effective way to make laptops slimmer than now. However laptops will not get slimmer than 2.09 cm or 0.82 inch because 2.5 inch hard drives (height) will limit that. E-sata will not arrive on any laptop as MBP has already possibility to connect e-sata using express card adapter. MB will keep cost low.
So it still be quite similar to already available apple laptops.
Just more memory, HD capacity and faster processors. That will be 100% upgraded, because that is what Apple does every time. I suggest to call that refreshment vs upgrade (new design).