‘How Two New Rogue One Novels Expand the Star Wars Canon’…
http://io9.gizmodo.com/how-two-new-rogue-one-novels-expand-the-star-wars-canon-1794866059
'Rebel Rising’ by Beth Revis - ISBN-10: 1484780833, ISBN-13: 978-1484780831
'The Guardians of the Whills’ by Greg Rucka - ISBN-10: 1484780817, ISBN-13: 978-1484780817
^ a Nerdist article on the Baze and Chirrut book - http://nerdist.com/star-wars-guardians-of-the-whills-rogue-one-greg-rucka/
and a decent article on both books - http://ew.com/books/2017/05/04/rogue-one-books-rebel-rising-guardians-whills/
some more that may also be of interest to book readers…
'Rogue One: A Star Wars Story’ (Movie Novelisation) by Alexander Freed - ISBN-10: 1784752924, ISBN-13: 978-1784752927
'Catalyst: A Rogue One Novel’ by James Luceno - ISBN-10: 1101967005, ISBN-13: 978-1101967003
&
'The Art of Rogue One: A Star Wars Story’ by Josh Kushins - ISBN-10: 1419722255, ISBN-13: 978-1419722257
'Star Wars: Rogue One - The Ultimate Visual Guide’ by DK - ISBN-10: 0241232422, ISBN-13: 978-0241232422
'Star Wars: Rogue One - Mission Files’ by Jason Fry - ISBN-10: 1405285036, ISBN-13: 978-1405285032