Yes, that article was written over two years ago and doesn't really cover WLS, beyond commenting on the Oracle acquisition of BEA.
As of Tools 8.98.2.0, IIRC, WebLogic is thus far supported only on Linux x64 (OEL or Red Hat), with other platform support on the way. Getting a WLS server up and running was on par with OAS in simplicity, but not nearly as simple as deploying Hyperion (Oracle EPM) apps to WLS - perhaps Oracle will develop some WLST scripts to automate the domain creation and app deployment via Server Manager - we'll see, but I'm not holding my breath.
That is about as far as I've gone with it though - might write an article on WLS clustering with E1 one of these days. You just never know what I'll do...including going into and coming out of "retirement".