Complex sentence: There will be six hardcover collections, in both standard and limited edition Gunslinger varieties with all six hardcovers (the fifty issues of the regular series, plus all the spin-offs) released by the end of 2017.
Split into simpler sentences: There will be six hardcover collections, in both standard and limited edition Gunslinger varieties. The plan is for all six hardcovers (the fifty issues of the regular series, plus all the spin-offs) released by the end of 2017.