Many people have been closely monitoring and reporting on the impact that digital technology is having on education – for better or worse.
Two good, recently published books to the topic are the second edition of Professor Neil Selwyn's Education and Technology: Key Issues and Debates (Bloomsbury, 2017), which looks more broadly at education and technology (you can read a review from Dr Zoetanya Sujon here), and Digital Language Learning and Teaching – Research, Theory and Practice (Routledge, 2017), edited by Michael Carrier, Ryan M. Damerow and Kathleen M. Bailey, which provides 'an overview of recent developments in the application of educational technology to language learning and teaching'.
If you'd rather not read a whole book for now, then why not visit a website or blog or two? The following are not resource sites about using digital technology in language teaching; rather, they examine the increasing role of technology in ELT, often from a critical perspective. All are worth exploring.
Adaptive Learning in ELT | Philip Kerr
The A–Z of ELT | Scott Thornbury
pedagogablog| Kyle Smith
The Digital Counter-revolution | Torn Halves
And, of course, not forgetting ELTjam.
If the websites above represent to varying extents a level of scepticism about the role digital technology might play in education, then the other end of the scale would include more evangelical voices such as Edutopia (from the George Lucas Educational Foundation) and The ICT Evangelist. These two sources aren't related to ELT specifically, but they'll give you a sense of what the positive discourse of educational technology sounds like.
If you have any other sources to recommend, feel free to add them in the comments below.