So I've noticed this stuff while browsing the usual Nintendo groups:

Trade mark information

Name: DIDDY KONG
Filing number: 014229579
Basis: CTM
Date of receipt: 10/06/2015
Type: Word
Nature: INDIVIDUAL
Nice classes: 9, 25, 28, 41 ( Nice Classification )
Vienna Classification
Filing date: 10/06/2015
Registration date
Expiry date
Designation date
Filing language: English
Second language: German
Application reference: EW32985AF
Trade mark status: Application under examination
Acquired distinctiveness: No

It made me think about the various Diddy Kong Racing 2 rumours we've been hearing about, as well as the fact that Retro possibly has something to show at this E3. Personally I'm a bit disappointed since I wanted Retro to work on something new (or Metroid :P) this time around, but I guess they're sticking with Donkey Kong :/ Though I definitely wouldn't mind if Monster Games is doing the work on DKR2.

What do you guys think?
source

HE'S FINALLY HERE, AND ABOUT TIME TOO!

Oh shitttt!!!!!!!!!!!!!!!!!

Maybe he´s just finally stepping out of the shadow of Donkey Kong a la Luigi with Mario

Maybe Monster Games is developing it? I just don't see Retro working on a DKR sequel!

If it is for wiiu, I will be so happy. 3ds, not so much.

Retro is not doing that.

im prob the only one who doesnt want diddy kong racing 2

It will be hilarious if it is retro's new game. The meltdowns will be something to savor. I'll be up for a diddy kong game.

A new Diddy Kong Racing would certainly catch my attention - especially if it's for the 3DS. It would make sense, too, since Mario Kart 7's release is quite distant at this point.