I am currently Porting my Netty Server to Version 4 (4.0.0.CR9).
While everything works so far I would also like to try out the performance benefits of the new java7 nio2 implementation. But it seems that the required classes like AioEventLoopGroup etc. are not inside the netty-all or other packages downloaded with the netty bundle.
Has the NIO2 Support been removed from Netty?
Yes it has bee removed as it was not any faster then nio.