This "Desired Character Nomination Campaign" (ノミネート希望キャラクター) will run between yesterday (January 20th) and February 2nd. You can nominate the character you like on Tamashii Feature Vol. 1's Twitter, and selected nominations (the ones with the highest number of nominations I guess) will be put in a vote at the upcoming Tamashii Feature Vol. 1. Visitors and audience at that event will then vote out the item to be released.
So far all the messages on the mentioned Twitter page are in Japanese. But I don't suppose this is a Japanese limited campaign. International S.H. Figuarts or Robot Damashii fans should be able to participate as well. ^^
Tamashii Features Vol. 1 will be held in twice, on different dates and venues:
Act 1: Akibahara - Bellesalle 1F, Akihabara
Date: Saturday (February 6th) & Sunday (February 7th)
Time: 9AM - 7PM (Saturday), 9AM - 5PM (Sunday)
Act 2: Osaka - Umeda Sky Building 3F, Osaka
Date: Thursday (February 11th)
Time: 9AM - 5PM
Admission is free. More information in this previous posting.
Image and information is from Tamashii Web.