In the special ‘post-postmodernism’ issue of the Estonian journal Methis (Vol 8, Nr 11, 2013), the editors Piret Viires and Priit Kruus have included a translation of ‘Notes on Metamodernism‘ (2010, translator Jaak Tomberg), alongside an introduction to metamodern theory and a series of interesting articles on contemporary Estonian literature. You can find the special issue here and the translation here.