The fate of the $1 billion ICON Brickell will be settled in about 30 days. Who will ultimately become the owner is still to be decided. BY MONICA HATCHER MHATCHER@MIAMIHERALD.COM Speculation is intensifying about the fate of the ICON Brickell condominium, the $1 billion crown jewel of Miami condo developer Jorge Perez. Perez, chairman and…