Twitter hints at new threaded conversations and who’s online features

Twitterhead Jack Dorseysent out a tweet this afternoon hinting the social platform might get a couple of interesting updates to tell us who else is currently online and to help us more easily follow Twitter conversation threads.
“Playing with some new Twitter features: presence (who else is on Twitter right now?) and threading (easier to read convos),” Dorsey tweeted, along with samples.
Playing with some new Twitter features: presence (who else is on Twitter right now?) and threadin