On the distant future

A correspondent writes to ask if the English present progressive with future meaning can be used to talk about the distant future. As an example, he cites his father getting retired ten years from now. Can he say: 'I'm setting up my own business when I get retired'?

All the standard accounts stress the imminence of the future event, when using this tense form. Quirk et al (§4.44) do give a non-imminent example:

I'm leaving the university in two years' time.

They stress the need to have the more...