4 blocks mined in less than 24 hours. Last week we found 3 blocks all week. The odds that this is just "good luck" is about 3.4%. Put another way, there is roughly a 96% chance that AM's hashrate just got a fairly dramatic increase. FC got sample chips, and got them hashing already, and their performance boosted AM's hash rate that much?

It's all just speculation at this point, but signs are looking really good...you can almost feel a coming FC announcement in the air.