All those asking about funding etc. That is not the issue. We were unable to secure the IP rights to continue with the Stalker franchise.— S.T.A.L.K.E.R. (@gscstalker) 25. April 2012
Instead they have announced the spiritual continuation of the series in an upcoming title Survarium.
@andychalk "Officially" yes, but we will continue the spirit of the series in our new title Survarium— S.T.A.L.K.E.R. (@gscstalker) 25. April 2012