Pokemon Shiny Gold was released in 2006 after fears that nintendo would not revisit the Jhoto region. It is a hack of Pokemon Fire Red and is a near identical remake of Pokemon Gold, with a few exceptions of course.
The Graphics are updated from Fire red with new sprites and Pokemon from the Hoenn region appearing throughout the game.
This is one of the more popular hacks out there and is availible to download free as a ROM or on the GameBoyAdvance (around £/$5-15 - eBay) Edit-it appeares that Zane will never finish this game. It's been stuck on Version 6 for a long time, since 2006. And I've found no evidence that it will be continued. Sad, because it was actually really fun.