No real reason why this wouldn't work.
All you need to do is to add remoting connector for ejb3 and remoting subsystem, by default in 8+ we ship with http-remoting configuration by default.
Basicly take a look how the 7.x has remoting configuration and you copy just that part to 8.x standalone.xml and you should be fine.
Other option would be that you upgrade ejb client libs to gain support for http-remoting. Either way there is no reason why it shouldn't work.
that are really good news. This makes it much easier for us to move to WildFly and JEE7.
Thanks a lot for your time! Best regards