According to mmajunkie.com:
Sources close to event today informed that the light heavyweights, Phil Davis and Tim Boetsch have agreed to fight at UFC 123, and paperwork is on its way.
UFC 123 is expected to take place Nov. 20 at The Palace of Auburn Hills in suburban Detroit.
Phil “Mr. Wonderful” Davis (7-0)
Win Rodney Wallace – Decision (Unanimous) UFC 117
Win Alexander Gustafsson – Submission (Anaconda Choke) UFC 112
Win Brian Stann – Decision (Unanimous) UFC 109
Win David Baggett – Submission (Rear-Naked Choke) UCFC
Tim “The Barbarian” Boetsch (12-3)
Win Todd Brown – Decision (Unanimous) UFC 117
Win Reese Shaner – KO (Punches) NAFC
Win Rudy Lindsey – Submission (Guillotine Choke) 5150 Combat League
Win Aaron Stark – Submission (Guillotine Choke) KOTC