I suspect down the road the iPad Pro will support some apps that current iOS devices won't or can't.
Any that support the Apple Pencil would come to mind. Adobe art design software looked interesting. The medical applications looked great. I felt the autocad was not really compelling because most real cad work requires a much larger screen.
When I travel, I carry my ipad ( v3) and a Surface Pro with keyboard and mouse. Takes less room than my old laptop when stacking them in my carry on bag.
The Apple TV was most impressive with the siri voice search for programming but you're right, they should have made it 4K and 3D capable. It does support 7.1 audio. But currently there aren't many 7.1 and 4K programs out yet so I guess when the 4K internet content arrives, they will upgrade it. Netflix and You Tube are the only places I know you can get 4K. Vudu offers 7.1 audio. I wonder if the Netflix App is the one that supports 3D? For now Apple TV is all about the user interface.
iphone 6s was not compelling enough for me to want to upgrade from my 3 month old iphone 6+ 128GB. I really like that and it has cut my ipad use in half. 6+ was a smart move for me. Next summer, my wife will be ready for her 2 years upgrade on her 5 so we may get one in June. 3D touch seemed not so compelling on the iphone, however using that to draw on the ipad Pro was interesting.
I was real excited they are coming out with more options for the Apple watch. The new anodized Gold and pink and other colors for the Aluminum sport will sell. However, there are very high quality 3rd party accessories now that I really like.
I now have an 18K (color) Gold, and Polished Black SS case cover that snaps on and you can't tell it from the original SS case. These cost under $10. from HOCO. I just got my wife a Rose Gold one for her Sport watch. AS for bands, Apple is coming out with a whole collection of sport plastic in more colors which look nice, but I don't like the rubber against my skin. I sweat under it. But the 3rd Party Apple bands are really high quality and cost mostly about $40. I now have the 18K Gold Plated stainless, the 2 tone SS/10K, and the Black SS band. Apple's bands are high quality but they are very expensive. Best to buy a rubber band model and order a nice metal band 3rd Party. My wife just got the Rose Gold plated SS band with magnetic loop. In June there were only available from China, but this past month Amazon stocks most of these models for next day delivery.
I look forward to wOS2 and look forward to some new apps now with direct access. While what I have now is perfectly fun and functional, I still look forward to have something new with the update.
On the iphone 6s camera, the new color and exposure balance was impressive as was the front camera flash. But I was disappointed in the lack of image stabilizer. I use a GoPro for my 4K shooting and two of them for 3D 4K now. I mount them on a LanParte Gyro stabilizer to get more stable shots while running or walking. I noticed the ultra smooth look the show had in some of those videos but in one scene I saw they were also using the Gyro stabilizer mount. I'm sure they are working on it but probably is difficult to get good OIS in a camera so thin. As I shoot now with the GoPro, I was real excited to see the new app running on the Apple watch, especially for the GoPro 4 Black. There are times when you mount a GoPro where you can't see the screen for framing and having the image on the watch is just exciting. I'm wondering if they will have an app for the iphone camera as well.