Do a solid search on brewbit. They tanked hard. Software was buggy and it would often fail with one outlet on causing you to continually heat or cool your beer. Neat concept with amateur execution.
I have heard rumors that ohmbrew will be adding wifi at some point, but I don't think I have ever seen anything official saying this is true.
I've wanted to build a brewpi setup, but I'm way more interested in an out of the box solution.