Last time when we encountered Apple developer community, we received warm interest. As there was nothing concrete to demonstrate, we had to finish something more to re-evaluate the community interest.
As it appears that iPhone developers have nothing comparable to App Inventor available, and everything on the previous post also applies to iPhone development, we are re-evaluating our possibilities to prioritize the iPhone support alongside the Android and Windows Phone.
Our own resources are somewhat limited and cannot be spread too widely, so we hope we can activate the iPhone community or Apple to join us on the effort.
Supporting iPhone/iOS independently (without any requirement for non-OSX toolchain) is quite possible with MonoDevelop as we already concept prototype tested earlier.