Based on the extremely popular Koren Sacks Siddur, the Koren Shalem Siddur is a new, enhanced siddur that includes the entire contents of the Sacks Siddur AND: 

• All Torah readings with new translations for the Shalosh Regalim and Hol HaMoed, Hanukka, Purim, Yom Ha'atzmaut and Yom Yerushalayim.

• Modern English translations of the Five Megillot.

• Additional personal supplications (tehinot)

For ease of use, and to facilitate adoption in synagogues and schools, the Koren Shalem Siddur maintains the same pagination as the Koren Sacks Siddur.