I posted here initially: FXCM warns it may be in breach of capital requirements in wake of CHF volatility

Both the FT (on FastFT, which is gated) and the Wall Street Journal (also gated) have picked up on the story.

Neither add anything to what I originally posted (link above), but if you can read the items, here are the links:

FastFT says: Swiss surprise claims two broker victims

Wall Street Journal: Swiss-Franc Move Cripples Currency Brokers
FXCM Suffers ‘Significant’ Losses; New Zealand Currency Trading House to Close After SNB’s Move

(ps. The New Zealand broker referred to was posted by Adam at the beginning of the Asia session: Forex broker Excel Markets calls it quits on SNB shocker)