I don't like these threads since they lead to so many unrealistic expectations, but hey if you're all into having fun so much.
Just realise, they're aiming an investor call at investors, you're not going to get anything very specific, just a target for Nintendo in the next 3-6 months, and some gestures to re-assure investors.
I'm not going to say what I want them to reveal, because that'd be a massive list I can't even order into a text list.
Here's what I believe they'll tell investors, realistically.
Sales update.
whether or not they plan to sell Wii U at a loss.
Any major partnerships, excluding any they want to keep a secret for e3.
Plans to launch Wii U with a Mario game, and follow it up with strong titles to keep momentum.
Perhaps a date on the eShop going web-browser compatible to get some extra avenues for cash.
I don't foresee much beyond that, in my crystal balls.