The following book is the first from a series of new books on the Hagim, to be released from Yeshivat Har Etzion and Yediot Seforim. It deals with Rosh Hashnah in general, in prayers, piutim and of course the shofar.
I haven't read this book yet, but the last Har Etzion book on Rosh Hashana was an impressive collection of articles, that generations of "Gushnickim" grew up on. The list of articles in this book look interesting, and judging by the authors, the book should be a great read.
There is a special evening about the book in Beit Knessed Ramban on the 25.9.11. Details here.