Here's the info (credits to StreetsAhead!)
To rescue King Dedede from Daranza (multi-armed enemy) Kirby must climb the World Tree (beanstalk thing) to the floating kingdom of Floarald. You need to Collect sun stones to reach the boss, collect all of them in one stage and something will happen. The key rings can be bought using star coins too.
Looks like there's about 20 power-ups, including the new Beetle (it spikes enemies before flinging them off and killing them) and Bell ones (already mentionned in a previous thread) :
There's also some new gameplay videos.
- Beetle and Bell power-ups
- Gameplay compilation
- Gameplay compilation 2
- King DeDeDe mini-games
And here's some artworks and screenshots (click here for more) :