As a fellow Wii U owner, and a relatively recent adopter (1.5 years now), I have to say I am saddened that they appear to be moving on so quickly. I was thinking I wouldn't have to consider another Nintendo console purchase until at least late 2017.
I would say that this is more of a defining time for Nintendo. What they do with the NX and their mobile initiative (which we will learn more about in just a few hours) will imo greatly effect their future as a dedicated (hardware + software) gaming company. There is excitement, but for me it is more of a hesitant anticipation as Nintendo could drastically change over the next few years.
I really do hope though that they improve accounts, cross compatibility, power/specs and truly are investing their resources in the NX rather than just slumping games wise.