There was an update about the current development status Sep 20. Also the roadmap that Stefan92 posted gives you a good idea whats going on. You can check out the development status update here:
What do u mean with traction ? The reason why so many people use Discord is because its more and easy accessible for most casual users, has a lot of features especially for chat that TS3 is missing, u can even use and join discord servers in your webbrowser and you can create a free server very easy. The overall quality and especially the voice quality on Teamspeak is 1000x better than on Discord. I hate it. Thats the reason why all serious gamers and esports / pro gamers or from other serious businesses use teamspeak for their voice coms as far as i know. When the new teamspeak releases it will be much better option than Discord regarding every aspect not only voice quality.
