I don't think that's quite true. Any _foreign_ bank account over $10k must be reported. However US bank accounts may be reported by the banks directly.
It's actually a validation of Bitcoin as another currency. What this (proposed/speculative) law says is that Bitcoin is equally valid as the Euro or Yen, and thus a "foreign currency holding" which must be reported.
Validity of bitcoin as a currency is irrelevant. What is relevant is that a US citizen can possess a cash-equivalent that behaves in a fashion similar to foreign currencies or commodities. The tax law is pretty clear on investments and cash-equivalents, bitcoin is both without addressing a question of currency status.
Until explicitly stated otherwise bitcoins are considered, by definition, a cash-equivalent for US citizens. I take it you don't file taxes in the US (or at least don't have very many assets)?