If you are referring ti the bear market turn around, I think we are almost into two years now. For me I believe what will change all these is when most if not all these scam ICOs got delisted from most exchange that is when life will return to Altcoins.
The shit coins in the market are already dead and there is no way that they will recover from the shit storm that hit the market, the top exchanges usually delist coins that are not having any volume and only shady exchanges keeps these shit coins. The bear market in the altcoin market is not showing any sign of moving up but the top coins in the market usually rises when the bitcoin market rallies.