This section contains the Marketing Cloud release notes for the year 2021:Marketing Cloud Release Notes - 21 Dec 2021Marketing Cloud Release Notes - 2 Dec 2021Marketing Cloud Release Notes - 30 Nov 2021Marketing Cloud Release Notes - 12 Oct 2021Marketing Cloud Release Notes - 15 Sep 2021Marketing Cloud Release Notes - 26 Aug 2021Marketing Cloud Release Notes - 1 Jun 2021Marketing Cloud Release Notes - 4 May 2021Marketing Cloud Release Notes - 27 Apr 2021Marketing Cloud Release Notes - 21 Apr 2021Marketing Cloud Release Notes - 8 Apr 2021Marketing Cloud Release Notes - 10 Mar 2021Marketing Cloud Release Notes - 2 Mar 2021Marketing Cloud Release Notes - 11 Feb 2021Marketing Cloud Release Notes - 22 Jan 2021Marketing Cloud Release Notes - 21 Jan 2021Marketing Cloud Release Notes - 6 Jan 2021