It’s still unclear that we can name it a Panda Update 25 or not? Panda update is becoming more integrated into the Google’s algorithm and hence it would be less noticeable.
Here are some links to discussions going on regarding the probable Panda 25 update:-
http://searchengineland.com/google-panda-update-25-seems-to-have-hit-151732
http://www.seroundtable.com/google-panda-update-rolling-16495.html
http://www.webpronews.com/google-panda-update-is-rolling-out-report-2013-03
http://www.seroundtable.com/google-panda-25-16506.html
http://searchenginewatch.com/article/2255205/Matt-Cutts-Google-Adding-Panda-to-Real-Time-Algorithm
Also See:-
Seo Checklist to Panda Proof Your Website
Google Panda Update 22
Google Panda Update 21
Google Panda Update Number 20
Google Panda 3.9.1
New Google Search Quality Updates
Importance of Content for Seo in a Post Panda World
Seo After Panda and Penguin Update
Infographic on Google Panda Update