Well I'll be honest, I'm discussing the near future rather then the actual future but hey it's all the same! Now this is more of a thought log of what I'm thinking is on the horizon for Apple.
Lets start with most recent. I think we all know the MacBook Pro line will see a design bringing it closer to the Air line but still keeping the power that the Pro line is known for. On the topic of the MacBook Pro line it will be seeing the lower end of the line gaining integrated graphics purely and as you go up the line there is the option to add in dedicated graphics. What does this mean? Well pretty simple, those of us who play video games and edit in Adobe will find a speed boost from a much needed addition of the Nivida cards. For everything else, it will be slimmer, gain a boosts battery life, only slightly though and of course the CPU will be the next generation of intel processors. In which case the battery life will also be far more accurate much like we've seen with the iPad. I have doubts though that it will gain a boost but I do feel that the second iteration will bring the battery boost if the first doesn't. The first iteration of the products I've found however brings all these snazzy new features including the battery life of a product. The battery life of a product is where the new war for Apple is. The MacBook Pro will gain 'retina' displays and that will trickle towards the rest of the line, like the iMac and the Cinema Displays. This is already seen with the pixel method that will be introduced into Mountain Lion. All Mac apps like they're iOS buddies will need to be adjusted for the higher pixels. The upside with the mac method will be that it is independent of the display and will adjust on the fly, so the developers will need only to submit one maximum resolution file and that file will adjust accordingly for your displays, this will hopefully reduce the issue that is only a minor plague on the iOS system. Further we can also see in the future that the MacBook Pro line will lose its SuperDrive (DVD Drive) and Apple's portable drive will be of use for many in this case if you want to use CDs or DVDs.
Apple's iPhone line will see a great update this year and the future updates will be equally as awesome. This years iPhone will gain the quad A6 processor, providing a nice boost in speed but even better than this is the added battery life. The battery for the 4S is a real downer, it will just barely get you through your day but that is with you also being pretty conservative about what functions etc, you use in the last few hours to help preserve battery life. The new one will hopefully eliminate this but it will not be as close to the iPad yet. You won't be able to use it at maximum everything for 10hrs straight but by iPhone 7 (it will be renamed to 'iPhone' by then I'm sure) you'll definitely be seeing some great battery life. The nano sim card I'm sure some of you have heard about will be introduced in the 6th generation of the iPhone or at least an iteration of depending on who wins. The phone dimensions will remain the same but the thinness will be altered. There is a good chance too that the new iPhone will stick with the industrial design but opt for a metal back rather than a glass back. Between the iPhone 5 and iPhone 6 there will also be an adjustment in the bottom connector. It will turn from the Apple dock connector to the mini dock connector, shrinking it will allow for shrinkage in parts giving a much thinner form factor. The name will switch down to 'iPhone' as Apple had done with the iPad. Display wise, I doubt the display would grow but there Is the chance that Apple could bring the sides in slightly instead of increasing the display size therefore increasing the device size. However, anything to do with the sides coming in or the display size I highly doubt will ever happen. The reasoning for the device change or display size change other than its thinness is simply due to when Apple tends to design a product the form factor stays true but other details will be adjusted. The products will always have the sound buttons placed on the same side, the silence button will also be located in the same position and same for the dock connector.
iPad will continue gaining the X version of the processor that the iPhone shall gain. So the iPad 4 will have the A6X, a bit extra battery life and potentially gain a minor weight adjustment as well as thinness. Though I'm more inclined to think that the battery life and A6X is far more likely. The form factor I see adjusting as like the iPhone line when iPad 5 rolls around.
Now there will be an Apple TV, starting somewhere between 42" to 50" but I don't foresee it being any bigger than 50. As for resolution? It will start off at 1080p and when Apple have figured out how to get 2K then 4K files as small or as close to being as small as 1080p files it will then boost the Apple TV into retina display. Until then Apple will be sticking with 1080p content. Rarely does Apple try and throw something into a product without a reason, much like the 1080p came with the introduction of the new iPad. So 2K content is more than likely the next move for content that will be delivered just like it went from SD to 720p then to 1080p. Apple TV will see this similar evolution in its adjustments, more than likely that will happen around Apple TV 3. The product will also gain iOS app eco-system access and further it will benefit from the change in processors, another factor in 2K content delivery. Pricing wise? I suspect this will go for just a little bit more than a cinema display, though it'll be sub 5K category above 3K. It will be made of metal and glass in Apple's true fashion but it will definitely be a thing of beauty.
So to end this I'll throw in my prediction for months:
iPhone 5 due date - September 2012
iPad 4 due date - March 2013
Apple TV: 1Q 2013
iPhone 6: September 2014
You can no doubt see the pattern emerging here. In June I can see Apple pushing both updates for Mac and iOS at the same time and attempting to merge as many features as possible though the OS's themselves will not merge totally.