http://www.neogaf.com/forum/showthread.php?t=751154

- most levels take around 10 minutes to complete on your first attempt
- Stage 3-3 Frantic Field is set against a hurricane, with small tornadoes, and lightning as obstacles. Eventually you reach the eye of the storm.
- The stage after is set in a forest, with sections on fire due to the previous level's lightning. You need to use watery fruit to put out vine fires in order to progress.
- tag barrels ala Donkey Kong 64
- multiple routes to take in levels
- three secret levels per world
- Time Attack returns, but you can select which character's DK barrels will appear
- upload times and full replays to show friends
- more emphasis on the background, which is constantly moving
- the background will sometimes provides hints to what you're going to encounter next
- the team wishes they could have done more with the animal buddies.
- Kelbaugh mentions that there was something from A Link to the Past that the team wanted to do, but couldn't, and used it in Link's Awakening instead. This was the ending of LA when the egg opens
- 6-6 Cliffside Slide, "like jumping right into the middle of an action movie", is a silhouette level
- 4-4 Irate Eight, an underwater level which sounds like the giant octopus from DKCR is back
- 3-3 Frantic Field has a bit of comedy.
- World 4 is made of only underwater levels
- 4-4 and 3-6 Cannon Canyon feature dynamic 3D camera movement.
- animation quality is improved over DKCR
- difficulty of TF hasn't been lowered, but there are added features that will give casual players an easier time
- Miyamoto told Retro, when first working on DKCR: "This is my baby. Don't mess it up."
- Kelbaugh and Tanabe both worked on DKC, with Tanabe on the Japanese localization, but never met.
- Ten years later Tanabe met Kelbaugh, when he became president of Retro. He saw that Kelbaugh had a DKC jacket, and they learned that they both worked on DKC. 
- when they both started on DKCR, Michael gave DKCR the codename F8 - fate.
- Retro was working on Mario Kart 7 and TF at the same time
- Tanabe and his team at SPD is Retro's primary contact at Nintendo
- If they found themselves on Kong Island Kelbaugh would team up with Diddy, and Tanabe with Donkey Kong, so that he could be carried around

Great new details! This game sure does sound like it'll be great! At first I was disappointed that Retro was working on yet another DK game, but I'm cool with that now.

I still need to play DKCR though... Probably will get it for my 3DS

I cant wait for this game next month. Really enjoyed the last one on Wii and never completed It.

I'm really hyped for this game! Too bad it releases close to the end of february... I loved the underwater levels in Donkey Kong Country, I'm happy they are back!