We already knew from the initial announcement that the hard fork was intended to happen somewhere in the mid/late January.
But despite the fact that we still don't know the date, if you follow Bitcoin Private and ZClassic on Twitter, it's easy to spot some clues that the hard fork should be announced soon.
The team seems to be working in a really solid was and the fork code was already announced as closed a few days ago for peer review. It's always a good sign was things are finished with time and properly tested.
On one of their latest tweet, they state that they don't want to announce the fork until they have a robust and tested electrum wallet. Which is another good sign of how solid they want the structure of the project to be and also an indicator that after this wallet is done, the date may be near. As they say in the tweet, at least four developers are working on this.
Finally, after another meeting from the team last night, they tweeted that there are only two issues left to solve before the date announcement. One probably being the wallet and the other one we don't know.
On the price chart, we can see consistent growth from ZClassic price since the announcement of the fork. And it will, almost for sure, increase when an actual date is revealed. So, if you really want to secure a position before the hard fork, don't wait much longer. (But always do a proper research before you get involved!)
So far, from what I have been following from their twitter and telegram, the Bitcoin Private team seems really solid and I have I see a great future for this project. Hope I am right :)
Check here the difference between Bitcoin Private and the other Bitcoin hard forks: https://steemit.com/bitcoin/@joaopcribeiro/hard-fork-battle-bitcoin-private-vs-bitcoin-cash-vs-bitcoin-gold-vs-bitcoin