http://www.vbs2.com/media/docs/Visitor4 ... review.pdf
Looks to me like it's pitched squarely at VBS2, but maybe there's a possibility to use it for ArmA2 maps too. Although, going by BIA's actions previously, I would doubt it

In any case, maybe we (ArmA2 devs) will see Visitor 4 even if it doesn't have the Land Builder.