ETF's are not the answer to all of the bear problems that persist in the bitcoin market. They will certainly help, and they add some hype to it, but I wouldn't bet the house on it.
There are many ETF's scheduled but nobody knows which one will be approved. Probably not this one, but maybe the next one. There's absolutely no certainty about these things so don't spend too much energy on researching them. Better off learning about trading or technical analysis.
The best thing that can happen to Bitcoin is that we lose all the noobs that think things like Futures and ETFs matter, no matter if they are from Winklevii or CBOE or anyone else. As long as we have these people on board we'll have these very sharp speculative moments of people looking at whatever news to make a move. In the long term all of these will not make it because they will be holding 0 BTC by the time Bitcoin resets the clock. Meanwhile let them have fun with the pump and dumps, just focus on increasing your BTC holdings and not your USD, or long term you will pay for not doing so.
As far as this ETF goes, it will not pass, there's like a 10% chance, so we will have another dump. Once the "bitcoin is dead" comments begin, smart money will start coming through and we'll continue the rise to ATH.