？
How's that thing coming along?
Literal
That [of-の] job [topic-は] how-is [copula-でしょう]?
例の ('that (which we both know about)') is a contextual demonstrative meaning 'the thing we discussed / the usual X / that thing.' Used to refer to a shared background topic. いかが ('how, how about') is the polite-register equivalent of どう, and いかがでしょう makes a polite, somewhat reserved inquiry.