The rumor katamari began earlier this week when AllGamesBeta posted alleged concept art of the upcoming city planning program, then things really got rolling as Gamespot reported on a translation of a German magazine article that all but confirms next year's launch details.
VG247 has also been gathering details from all over, noting the "Inside the GlassBox" talk at next week's GDC, which introduces the "Glassbox" engine as "next-generation technology that is built from the ground up to power the next entry in one of their most beloved franchises."
The EA and Maxis event will be held next Tuesday, March 6.
