Meri Huws says her vision is of a Wales where the Welsh language plays a completely central role in public life.
First task of Commissioner:to identify which orgs & companies will be required to comply & to see if they are complying.
Qualifications are: public sector, utilities, telecom companies & businesses receiving more than £400k public money per year.
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RSPCA Cymru are warning that almost 6,000 incidents were reported over festive period last year.
A fine and dry end to the week with plenty of sunshine, but it's a chilly day ahead!
A dry night with just a few showers at times, but temperatures will fall with some areas seeing a frost by the early hours.