I agree, but again, point of OP is that Nintendo is finished with Wii U and that are focused on NX now, and you wrote "I think I realized this sometime in mid-2013", nobody knew back then when Nintendo will start focus on NX or how long Wii U will last.

Nintendo probably start shifting projects, resources and attention to NX in late 2014. or erly 2015, and that was obvious when we didn't had any big Wii U announcement at E3.

I think we can see a game or 2 for early 2017 because that would be pre NX launch..

but yes, I basically agree, they are definitely slowing down and shifting gears

The first glimpse was in March 2015 with the Zelda delay and the NX announcement.
E3 2015 confirmed this.
Welcome to the NX hype club.

He may refers in shipments where it's yoy up...

Say that with some reservation... Don't forget splatoon's sales wonder!

You just remembered me  a person with who I had a dispute about wii u  sales in Japan back in february!

He was saying with certainty that wii u was near at the 80% of its lt sales (Which was implying 2.8m final sales and wii u is  at 2.7m as of second week of november '15, two years and eleven months after it's launch in Japan) and I suggested him to be cautious because there would be things that could boost wii u or  make it to resurge! His answer was absolute: in no way wii u sales will be raised! Guess what! Splatoon did it , xenoblade chronicles had boosted previously wii u and super mario maker gave a further push/kept wii u afloat along with splatoon retrospective boost.

Wii u has really tempting bundles for the holidays...

Wii u has a super smash bros+splatoon deluxe set bundle for a suggested price of 279$ for holidays, Mario kart 8+splatoon premium pack bundle for a suggested price of 280 euros in Europe and Splatoon bundle in Japan which was released recently and increased wii u sales!

Time stops for no man. Nintendo themselves showed as much by how they only spent 10 seconds addressing his death in the direct. You can't expect everyone to cry for months and months whenever someone dies. I'm sure instead of wasting time with that Iwata would rather Nintendo keep on running like they always have.

Not saying it's impossible; just unlikely. A price cut might help but won't make for more than a short term boost. Now would be the perfect time for one though and it's kind of overdue. Then again, they need to make money as well so it could be they'll try to get some return on their investment hardware-wise, I don't know how big their profit margins on each unit is, but I can't imagine that it's huge.
Yes, software makes up most of the profit, but it's hard to tell whether a price cut could be worth it in the end if software sales don't pick up enough to offset the losses (or reduced profits).

Sure; it could have a better holiday than last year, but without a price cut and recent system selling software, it will be hard when it's already down 10-15% yoy.

Not to mention the fact that they were headed for the storm long before Iwata died. In fact; I wager they were in imminent trouble before he even got diagnosed. Besides; any one CEO's illness or even death shouldn't prevent anyone from discussing the future and present state of the company, on the contrary, it seems more pertinent and relevant now than ever.

I didn't see anyone holding back when Steve Jobs died, and I sure didn't see DolPhanTendo stepping in to tell anyone to do so.

-DigiTimes reported that Nintendo is gearing for next year launch with 20m devaices.

-World Street Journal reported that Nintendo start distributing a software development kit for its new NX video game platform and they that will be released next year. "Nintendo would likely include both a console and at least one mobile unit that could either be used in conjunction with the console or taken on the road for separate use".

-For Wii U in whole 2015. Nintendo didn't had not one new announcement for bigger game that isn't port, remaster or spin off. Same could say for 3DS. Why!? I will tell you why, because Nintendo is preparing all bigger projects for next year NX launch. Till NX dont arrive next year we will fillers made of ports, remasters or spin off.

Nintendo will be happy if you buy just one device because they will sell you games that can be played on that device. Off course that not every user will buy handheld and home console because they are quite different, but Nintendo will make them lot more similar and with hevi integration people will have more reasons to buy both devices.

They will not have same games!? You realise that one of biggest reason why Nintendo is in this position this gen because they can't any more support two completely different platforms!? Basically whole Nintendo talk about new platform is to prevent that by making platform that will be more like Apple or iOS where you have different devices that can play same games and apps. In that way Nintendo will not need to make two totally different Mario Kart games, two 2D Mario games, two Smash games...they will just make one game that will work on home console and handheld too, in that way they will make more games just for one platform than they could for each platform separate like before. All this probably is most certain thing about NX.

NIntendo very likely next year will release platform with home and handheld console.

If you're a company that puts respect and morals before money you're okay in my book. This what Nintendo did I respect that. I'm willing to bet the NX has been pushed back by a few months as well. I know it's hard to phanthom businesses putting good morals before making an extra buck or two but I see it all the time here the U.S. And Nintendo seems like they did the same. 

E3 wasn't great this year because they focused on this year only to try to help build excitement for the holidays. But to say they are done supporting is crazy and you aren't thinking. Game releases for 2016 so far are on par for what early 2015 and better the  2014 let's recap.

2014 if can remember only had Tropical Freeze on February 

2015 had Mario Party, Rainbow Curse

2016 Star Fox Pokken Tournament Twilight Princess HD

Late Spring 2014 Mario Kart

                  2015 Splatoon

                  2016 Zelda U( prediction a direct annoucing it early February around Twilight Princess HD 30th anniversary hype)

Looks like it's not Nintendo not supporting the WiiU but like third parties

Japanese don't take failure well. The Wii U is on its kamikaze run now.