This is what many were speculating, and indeed, directly after the snapshot was taken at Block 491407, we saw altcoin prices immediately jump upwards. But still, this could be a "dead cat bounce" that we are seeing now. It really depends on what Bitcoin does. John Bollinger (of Bollinger Band fame) said earlier today that he sees a classic double top in BTCUSD. What do you think that means for altcoins?