there is already going to be a lag Without cross-compilers, the lag is as you say: developers update their apps. With cross-compilers, the lag balloons: the m

there is already going to be a lag Without cross-compilers, the lag is as you say: developers update their apps. With cross-compilers, the lag balloons: the makers of the cross-compiler toolset need to incorporate the latest Apple features (if they choose to do so given the rest of their market), roll out their tools to developers, then developers have to use the new tools to update their apps. Slow!