It's not decided how and when EVE will be released. However, it's probable that the home automation part is removed if it is released as a separate app in appstore.
I know that implementing the home automation function is something very personal, there are a lot of systems out there all using different code :-(
We develop in Command Fusions guiDesigner, it is very flexible and can handle most system as long it has a tcp or udp protocol. One can also use Javascript code for even more customization, we use it a lot. So I recommend you to test Command Fusion, the guiDesigner/iViewer for iPad is free but iViewer is limited to use of only one page and no lists without a valid license. What you make can then be integrated to eve.
I'll have a run, can't find a lot of youtube how-to's :-(