pittenweem - There's a St. Andrews mini-stamp coming out out two weeks after Tia-the-dog. (A tie-in to a series of Stewart stamps.)
(And as long as I'm on the subject - coughingbear - I assume you have an 1860 Able Seaman stamp already?)
Also - they're working their way steadily through royalty. In addition to the House of Stewart, Lancaster, York, and Tudor are coming up in the first half of the year, with miniature tie-ins for related events and people, such as the Royal Exchange and Drake's circumnavigation of the world.