UBS - "Yen weakness remains the dominant theme of FX markets as the BoJ is pressed to deliver, but the Fed should grab the limelight next week as the FOMC meets for the first time this year. With 2013 getting off to a strong start, markets will be sensitive to any hints of a policy shift which may bring forward the normalization schedule. The RBNZ is expected to leave rates unchanged. On the data front, payrolls and manufacturing ISM and Q4 GDP feature in the US. In Europe final PMIs are…