As of today, four main roster wrestlers parted ways with the WWE: Yoshi Tatsu, Evan Bourne, Camacho, and Brodus Clay.
Not really a surprise in the case of Yoshi Tatsu, who hasn't even been used as a jobber in the main shows Raw and SmackDown as of late. Only in NXT, he could be seen from time to time, but the times where the Japanese wrestler had been victorious have been over for a long time.
More surprising are the news that former Funkasaurus Brodus Clay left the WWE as well. Lately, he had been used as a heel to pose a threat for Adrain Neville's NXT title, couldn't really impress though.
The former Tag Team Partner of Hunico, Camacho, had been released as well. Lately, he could be seen in a small feud with Adam Rose.
One parting that makes me personally very sad is to see Evan Bourne leave the WWE. As a former indie star and one of the guys in the new ECW, the high flyer had always shown dedication for his job, fascinating and delighting his many fans. After getting suspended due to drug abuse and a rather unfortunate injury, many WWE fans had been waiting for the exciting and air bourne man to return.
It may very well be, that Bourne - maybe back under his own and real name - returns to the ring with ROH or another indie league, but not in the WWE anymore.
EDIT:
New names have been announced by the WWE. Aksana, Jinder Mahal, Drew McIntyre, Curt Hawkins as well as Theodore Long ended their collaboration with the world's biggest wrestling company. Fruthermore, WWE parted with referee Marc Harris.