I sent an email to my colleague for any questions he had, he could feel free to ask me.
This is the reply from him:
Will do, just got sidetracked for a bit here… what else is new. =)
Should I understand "What else is new" as a question or something else? It happens to seem an informal way of saying something but I couldn't really understand the informal meaning. I know what it says literally though.
TheFreeDictionary.com defines it:
Inf. This isn't new. It has happened before; Not this again.
But personally, I couldn't fit its definition in my colleague's sentence.