How would the entrance of ASICs make the price tank?
The initial increase in bitcoins prior to the mining difficulty adjustment will most likely cause a pullback due to supply demand metrics. Using supply demand metrics this will likely cause a short term pull back in price.
-ak
Sorry buddy but I think your wrong here and I'll explain why. Even once the new asics are out and mining, there's still only going to be 25 coin rewards, the only thing that having an asic now will do for you is allow you and your pool to have more power and as such earn more of the rewards then normal, there wont be an abundance of coins because of the abundance of power.
I assume any smart miner will stack his newly acquired asic mining coins and not cash them out every day upon payment. If anything the new asics will raise the price, because more people will believe in mining and get into it, and they'll do that by buying BTC and then spending them on miners, especially if Avalon only takes BTC!