November 2009 November 5th - Toolchain Conservatively Uploaded November 19th - Developer Summit
December 2009 December 3rd - Feature Definition Freeze December 10th - Alpha 1
January 2010 January 14th - Alpha 2 January 28th - Partner Upload Deadline / *Ubuntu 8.04.4*
February 2010
February 11th - LTS Debian Import Freeze February 18th - Feature Freeze February 25th - Alpha 3
March 2010 March 4th - User Interface Freeze March 11th - Beta1Freeze, KernelFreeze March 18th - Beta 1 March 25 - Documentation String Freeze
April 2010 April 1st - Beta 2 Freeze April 8th - Beta 2 April 15th - FinalFreeze / Non-Language-Pack Translation Deadline April 22nd - ReleaseCandidate / Language Pack Translation Deadline April 29th - Ubuntu 10.04 LTS Final Release