It is called The Spiciest Hits and is rumored to be released on March 13, 2006.

I got this statement from a website:

Note: It is still unclear as to whether or not the so-called "Spiciest Hits" album will be released or is even real. It was only confirmed in December of 2005 by a single employee of EMI in Germany, however it is still unknown how credible this source is. No other countries, including the girls home country of the UK, have confirmed the album's existence. It is rumored that the album will be released with no promotion from any of the girls.

But it has been confirmed that there will be a video consisting of their music videos called "The Spiciest Videos" released on March 20.

wow spiciest hits is gay... change the name pls!

Good for them, its sad to see them stop after a few alblums.

i love spice girls!!

They had that many singles out, or will it be like 10 songs, like Nsync (Who has 11, plus a bonus)