I checked the Sci Fi site and no episodes will be skipped. They list episode #861 (#1087) on both the schedule for August 29thth & September 2nd. Weird.
THE BAD NEWS...
Sci Fi is pre-empting DS during most of October...it's only airing on October 13th & October 20th - 30th, according to their online schedule. It's also being pre-empted on the 31st. Various daily marathons are airing in it's time slot during the rest of October.