The Scottish listings will be out fairly soon: the TMSA (Traditional Music and Song assocaition of Scotland) produces a free calendar of events every year, running from Jan-Dec, and the same info is available on their website, tho' at present it will prob only show the rest of 2008.
http://www.tmsa.org.uk/
Also Celtic Connections in Glasgow will be revealing all on 21st October, when they launch the Jan-Feb 2009 programme: check out:
http://www.celticconnections.com/

Also look at Living Tradition magazine for listings (currently trying out putting the mag online) or preferab;y subscribe to it!