Whatever the ECB comes up with is likely to pale in comparison to developments in Tokyo earlier, where the Bank of Japan announced a massive expansion of its non-standard efforts to increase the amount of money in the economy.
In my mind, they both are signals of an interloper effect that happens when the money-making opportunities in a non-conventional part of the economy become so significant that those from the conventional part come rushing in to get their share.
This can't be ignored: History tells us that in periods of dollar weakness money tends to flow away from the innovative economy and into non-productive, hard assets.