An Asian news outlet has been reporting that a 3DS XL, featuring a 4.3" screen will go on sale later this year at around $399 and be revealed during E3 2012.
Though not known to normally comment on rumors, Nintendo has said this is "speculative" and that it is "not factually correct. " Though one would hope to find out about these rumors during the Nintendo Press Briefing later this morning, other rumors suggest Nintendo won't even talk about the 3DS during the event this morning.
Instead, Nintendo will host some type of online 3DS session on Wednesday online. Doing this would indicate that the Wii U is going to be very complicated to explain and that they feel the 3DS doesn't need any additional buzz.
We will see what Nintendo has for us later this morning! Stay tuned.