I haven't pre-ordered and did the right thing of waiting and seeing. This is really a poor performance from Nintendo, what ever happened to them stepping up with their online. This is one of the reasons why Nintendo isn't an option for most gamers on other platforms, they clearly are doing it wrong, if this rumour is true.
I just came off from the GoNintendo forums and the comments we're the most one sided Nintendo fanboy comments I have ever seen, stuff like "I don't care about multiplayer, so no problem for me". What strikes me, if this rumour is true, there's a whole 1GB of RAM for the OS, for Mii Verse, but yet how can it not have the support for a system wide voice chat option. I doubt Nintendo are that stupid to not think about system wide voice chat, the box has something written about Wii U chat. I guess we'll find out in a month, but if this rumour is true, then how am I supposed to take Nintendo seriously if they can't get system wide voice chat on their console that has more memory than the 360 and PS3 (where the 360 has party chat, and don't give me the excuse of PS3 doesn't have it too, we're in 2012, PS3 was made in 2006, the reason why it isn't in PS3 is because there isn't enough RAM).
How is Nintendo supposed to capture the other gamers that play on PS3 and 360, especially since 360 users are enjoying party chat. Even the PS Vita has cross game chat. If I can't see Nintendo getting serious with this new console (lack of information, a month away from release and still no idea how online works) then how are others, cosidering I was a potential launch day buyer for this console.
That's the unfortunate thing about Nintendo. They're all about secrets and surprises. I really wish they would actually talk about their products in more detail.
About the rumor:
What I don't understand is why the headsets will be required to plug into the gamepad. Why not plug into the console via USB like the other 2 systems? It would make much more sense and would be a LOT easier for chatting.
As for the select titles... Does that actually matter? Wouldn't it be up to the developer to put game chat on anyway? But I still think Nintendo should put some form of party chat on the Wii U. Xbox 360 has been doing since (2008?). This is one of the few downsides I see for getting the Wii U. Still not nearly enough for me to cancel my pre-order.
Off Topic:
After finally playing it yesterday, I can finally give a full, honest and truthful opinion on the GamePad. It's wonderful and not cheap feeling. Nintendo continues to make high quality products.