This Shabbat is Shabbat Mevarchim ("the Shabbat that blesses" the new month): a special prayer is recited blessing the Rosh Chodesh ("Head of the Month") of upcoming month of Kislev, which falls on Friday of next week.

Prior to the blessing, we announce the precise time of the molad, the "birth" of the new moon. Click here for molad times.

It is a Chabad custom to recite the entire book of Psalms before morning prayers, and to conduct farbrengens (chassidic gatherings) in the course of the Shabbat.

Links: On the Significance of Shabbat Mevarchim; Tehillim (the Book of Psalms); The Farbrengen