The main press conference from Nintendo on June 5th will focus on the Wii U. There might be something about the 3DS, but there won’t be that much handheld-love. Until June 6th, that is. It has been revealed that the hour-long Software Showcase event at 6pm PST (or 9pm EST) on June 6th will focus exclusively on the 3DS. To be notified about the event, feel free to sign up for the Nintendo Newsletter.
[Thanks to @Eliksor for sending this in.]