I think altcoins bull are precisely exist, just a matter of time because bitcoin has totally develope even in a gradual way and altcoins wil surely follow on bitcoin's growth. And hopefully it will continue to grow beyond on what we have desire.
some altcoins have started to rise. even ethereum is now also experiencing a slight increase. not the most important problem is still in an uptrend. I think bull will come soon for altcoin, but before that maybe we should wait for bitcoin to experience a big pump first.