Lupe Fiasco stirred up some speculation and anticipation this weekend with a brief but noteworthy announcement on his Twitter account. The Chi-Town rapper broadcast two tweets this past Friday, April 2, alluding he was in the studio brewing up something special with a group of young rappers that he dubbed the "All City Chess Club."

"All City Chess Club was in the studio last night," he wrote. Four hours later, Lupe decided to explain his first message a bit, writing, "This is All City Chess Club fyi: Asher Roth, B.o.B., The Cool Kids, Charles Hamilton, Blu, Diggy, J. Cole and Lupe Fiasco." Though Lupe failed to reveal any further details, his tweets have sent the blogosphere buzzing about the possible collaborative work between this group of young emcees.

With the exception of Lupe, The Cool Kids and Diggy Simmons – who recently inked his first deal with Atlantic Records – the rest of the lineup are all alumni of XXL's Freshman Class feature. J. Cole is expected to release his debut album this Spring, as is B.o.B., who had two of the most acclaimed mixtapes of 2009 -- 'The Warm Up' and 'B.o.B vs. Bobby Ray.' Charles Hamilton, who lost his record deal with Interscope in 2009, comes as the most surprising name in the bunch, as he's been M.I.A. from the industry for the past year.

Lupe Fiasco is currently performing U.S. dates on his 'Steppin Lasers' Tour. B.o.B. will join him on tour through May 7.