I'll be there now in a minute
I'll be there at some point. Possibly soon. Possibly not. Do not wait in.
Heard all over Ireland
In use "Are you nearly ready?" "I'll be there now in a minute."
Overheard One cannot be there now and also in a minute without the power of quantum bilocation.

Shall I translate it into posh English for you, skin?
Hello! I've polished my vowels for you. Here it is in posh English.
Are you nearly ready? I shall present myself at some unspecified future juncture.
Updated