The 7.8.5 candidate version had some problems with the synch apparently, that's being fixed before the final 7.8.5 relase, wich has the RPC calls that Bittrex needed for listing.
Other members are also developing a web wallet (i think it's already operational) and we could have a mobile wallet and a light one very soon.

Maybe big exchanges will not list XRB immediately or we might have some minor hiccups during the development but how many coins do you know that are as new and innovative as XRB really? I'm confident in this project and the work that Colin has done \ is doing is in my opinion amazing.