>I am now working for a project .
>I need to buy a copy of VFP.
>shall I wait for the VFP 8 to buy or use VFP 7 and
>after VFP 8 launch then upgrade the project ?
>will it launch soon ?

Are you able to download the free public beta, to see if there's anything in there you need to wait for? As long as you don't use any VFP8-specific language features, you can work in 8 and then recompile in 7 for your actual release.