the iOS support is in development now ...
no actual eta but David thinks/hopes it will be ready some time this year.
any projects being made now in the free version or the others will work in any future releases of VS ...
the porting for various platforms is mostly done in the export/build game part as far as I know
you may have to replace certain audio/video formats depending on the intended platform target - David will have to confirm this!
as for android - no idea as of yet.