21 March 2017 - Royal Mail announced its annual stamp price rises in late February and they take effect from 27 March 2017.
The Europe 20g and Worldwide 10g rate of £1.05 rises, and requires the £1.17 'Sunrise Red' or vermillion
The Worldwide 20g rate rises from £1.33 to £1.40 requiring a new 'Dark Pine Green' or grey-green
The Europe 100g rate of £1.52 rises to £1.57 requiring a new 'Tarragon Green' or yellow-olive stamp
The World 100g rate of £2.25 rises to £2.27, so a new 'Harvest Gold' or ochre stamp
The Large Letter 100g rate for Europe rises from £2.45 to £2.55
which is a new stamp in a new colour, though doubtless catalogue editors will choose a different description to Royal Mail's "Garnet Red" Sold as a set of singles or multiples, or cylinder and date blocks. (Cheaper than buying individual values.)