OMFG
Do you really think it's up to the Electroneum Dev Team (or any other Dev Team) to decide which exchanges will list their coin?
Let me enlighten you. No it's not. The only ones that have a saying in this are the exchanges themselves.
So the only thing Dev Teams can do is file a request (which they did with numerous exchanges) and then wait.

If you want your favourite exchange to list Electroneum, go spam them about it.

Indeed. I'm pretty sure Bittrex is working hard to update there servers to be able to welcome new customers asap.
I would realy be happy to see ETN on Bittrex since it's my favorite exchange. But this is up to Bittrex, the ETN-team can't do anything more than we do: just be patient and wait.

The beta-test started on January 19th.
So yes, it is working (for a small group of beta testers)

It is not up to the ETN-team to decide where ETN is listed. That's only up to the exchanges themselves. Only thing that the ETN-team can do (and they are doing so) is file requests with other exchanges. If you want ETN to be listed on your prefered exchange, spam them about it. So far, Cryptopia is probably pretty happy about ETN not listed on any other exchange because it has been their far most most profitable coin for more than a month now.

Same goes for the ever ongoing questions about the Ios app. That is also not up to the ETN-team. Spam Steve Jobs about it (or better spam his heirs cause he will probably not answer soon)