I don't care to much about an ETF being approved. All the news I've read is pointing to the asian countries being the driver of BTC's latest rise to record highs. I'm also hearing very persistent rumors that China is going through all of it's internal exchanges to wipe out the fraud before officially adopting BTC for it's One Road project.
BTC/Silver/Gold are all winners if one takes the long view.
Or just buy ETH. The upside is much higher and the use of Ether goes far beyond just currency. Just my 2 cents.
I haven't made the time to research ETH yet, although the exchanges make them easy enough to obtain so I have a few as a pure curious speculation. Either way the future is going to be awesome.