Book excerpt: Over the last thirty years, two social developments have occurred that have led to a need for change in language policy in Japan. One is the increase in the number of migrants needing opportunities to learn Japanese as a second language, the other is the influence of electronic technologies on the way Japanese is written. This book looks at the impact of these developments on linguistic behaviour and language management and policy, and at the role of language ideology in the way they have been addressed. Immigration-induced demographic changes confront long cherished notions of national monolingualism and technological advances in electronic text production have led to textual practices with ramifications for script use and for literacy in general. The book will be welcomed by researchers and professionals in language policy and management and by those working in Japanese Studies.