Open abstract submission, add comment on fees

Author: a-latyshev

conference/2026.md

@@ -8,6 +8,7 @@ permalink: /fenics-2026/
 
 ## Updates
 
+* **16 January 2026**: Abstract submission is open.
 * **27 November 2025**: Abstract submission deadline is announced as 13 March 2026.
 * **12 September 2025**: FEniCS 2026 is announced.
 
@@ -32,7 +33,7 @@ Links to previous FEniCS conferences can be found [here](index.md).
 
 ## Important dates
 
-- Abstract submission is open: early 2026.
+- Abstract submission is open: 16 January 2026.
 - Abstract submission deadline: 13 March 2026.
 - Information about abstract acceptence is publshed: TBA
 - Early bird registration deadline: 15 May 2026.
@@ -57,12 +58,20 @@ France
 
 ## Registration
 
-- All participants must register for the conference.
 - Link to the registration form and deadlines will be posted in early 2026.
+- Early bird registration fee will be set around 200€-250€.
+- All participants must register for the conference.
+- The registration fee includes: conference activities, coffee breaks,
+  conference dinner, social events. The registration fee does not include
+  lunches and it is non refundable.
 
 ## Abstract submission
 
-The call for abstract for talks and posters will open in early 2026.
+- [Call for abstracts (talks and posters)](https://docs.google.com/forms/d/e/1FAIpQLSf746nuRPk8VcpVispuXuhExP2W9GQPdXP5lEvs7NjIYLzQnQ/viewform) is now open, and closes on 13 March 2026.
+- Conference delegates will be notified about abstract acceptance after abstract submission closes.
+- The length of talks will depend on registration numbers, but is expected to be around 15 minutes.
+- There will be a dedicated poster session.
+- Presenting is not a prerequisite for attending: you are welcome to register for the conference and attend without talking/presenting a poster.
 
 ## Code of conduct