The gains are still extending and this is so refreshing, at least altcoins are coming back to life now. However, it's not a good time to buy in now at almost $6,000. It's already late and buying now will amount to chasing the price (this is a wrong approach in business). Bitcoin is headed for a slight correction from the technical analysis before continuing on the bull run.
From what I have seen in the past it seems that when bitcoin begins to rally it takes alts some time to wake up, bitcoin has been growing consistently for weeks so this tells me that those that are predicting a new bull market are not far from their predictions so buying now may not be a bad idea if you are willing to hold for a few years, however what I am really waiting for is for alts to begin to show some movement but so far I am disappointed by what I am seeing.