Reuters on ECB bond buying plans
Policymakers leaning towards nuanced tweaks in reinvestment, including an open-ended time horizon
Comfortable with market expectations of reinvestments for 2-3 years
Shift to new capital key with regard to flow of reinvestments could be done over the course of several years
Tweaks, including new capital key, aim to be broadly market neutral
I don't see anything for the euro here but European sovereign bond managers will be eager to know the details.