You will not need a paid PlayStation Plus subscription to record and share your gameplay clips.
The word comes via Sony Worldwide Studios president Shuhei Yoshida:
@JasonBassant no, thanks :D
-- Shuhei Yoshida (@yosp) August 8, 2013
@jonboi204 no
-- Shuhei Yoshida (@yosp) August 8, 2013
Written by: Andre Yoskowitz @ 8 Aug 2013 23:07