Actually, it will be themed around the world of sugar, syrup and chocolate! That's not the only good good news however. SMF1 has gotten a major update not long ago, now called SMF1 Ver.E, that added a LOT of new tilesets, backgrounds, music tracks and a new enemy to the game! SMF1: Candy Edition will actually run on the Ver.E engine, so there's more content available right from the start.
This edition started development some week ago, and you can find some early screenshots on the official page for the edition. Once the game is finished, you will be able to play the game there as well! The game is expected to be finished somewhere in the upcoming February. Check the SMF1: Candy Edition (Official Page) page often if you're interested, as development updates and new screenshots will soon be posted there regularly.