Sander released a new version of his coop mission pack for ArmA 2: Combined Operations in our forums.

Quote Sander :
Version 1.9 is a major update of the coop mission pack. All existing missions have been altered to use a different method of generating the briefing notes and tasks. It also includes two new missions for a total of 20 coops.

New files:

co06_wanted_column.Takistan.pbo
co09_advance_directive.Takistan.pbo

Wanted Column features the ambush of an armoured column by Special Forces.

Advance Directive has an infantry squad repel a Takistani attack before moving up to capture an enemy base.