We are in the process of upgrading website (sitecore 7.2 + glass.mapper 4.0 + glass.mapper.castlewindsor) to sitecore 8.2 + glass.mapper 4.3. Glass.Mapper.Sc.CastleWindsor has been discontinued and I came across an outdated article http://www.glass.lu/Blog/MixingInIoc. Is there any latest documentation to integrating IoC with Glass.Mapper? Please advice.
In Sitecore 8.2 the old (good) config-based Sitecore Factory IoC container has been extended and integrated with Microsoft DependencyInjection. Both frameworks are available OOTB now which allows to configure dependencies using either config files or code-based approach.
Before switching back to Castle Windsor (and paying the integration price), you may want to evaluate the Microsoft DependencyInjection capabilities and decide if this functionality is sufficient for the project needs. You can also read more about the new Siteore DI in this article.
We could use latest glass mapper without mixing IoC and Request for documentation to mix in IoC has been created here https://github.com/mikeedwards83/Glass.Mapper/issues/308