Classic gridcoin will most likely retire by the end of this week. Polo, C-cex and Swisscex will al stop trading Gridcoin classic by then. The ticker will change to GRCX.
These exchanges will all add Gridcoinresearch as soon as the client is stable enough to be released to them. Right now Rob is still working on a few tweaks, latest estimate I have seen is Friday. Obviously the client has to be absolutely stable to be released.
When this happens we can start tweeting Bittrex some more and launch a campaign to get us added. I have been tweeting them regularly over the last weeks just to get our name to stick.