I just realised that the guy (on the Swedish forum) was talking about "our Viggens", as in there being more than one of them.
Maybe, like is the case with the Tomcat, they are doing more than one version. If we're getting both the AJ, the JA and maybe even the AJS, that would indeed be jaw dropping.
Getting both serious sea and ground strike capability as well as mutiple air target engagement capability with Sky Flash would make it a bunch of interesting platforms in the current DCS World environment.