Start here for everything 26.05! Find links to release notes, webinar schedules, registration, Monday Minutes, educational content, and more. This page will be updated as new content is released.

Upgrade Schedule

Upgrade Time: After 9pm local time for the partner

Test Server Upgrades: September 14th

Early Adopter Upgrades: September 14th and October 5th (updated package)

General Upgrades: Week of October 19th

Early Adopters

Early Adopter Upgrades will take place on September 14th and October 5th (updated package).

Testing Plan

Bug Roundup

Click here to see which bugs have been identified by early adopters, what patches will be included in our 26.05 release, and what we're still working on.

What's New Webinar

Date & Time: Wednesday, Sep 16, 2026 02:30 PM ET

Description: Join the Education team for this What's New Webinar to review all the latest and greatest features of the Koha 26.05 Upgrade!

Agenda: View the agenda here.

Q&A Session

Date & Time: 

Description: Join the Education team for a Q&A session on all things Koha 26.05!

Registration: Please register for the Koha 26.05 Q&A Webinar. If you can not make the live webinar, please register and a link to the recording will be sent. 

Release Notes and Manual

Learn about all of the new features and exciting enhancements coming in 26.05!

ByWater Solutions

The Koha Community Announces 26.05 Release

ByWater Solutions' Partners Sponsor Development in Koha 26.05 Release

Koha Community

Community 26.05 release notes at koha-community.org.

26.05 Manual: English or full list of languages

26.05 database schema

Monday Minutes and Documentation

1. Monday Minutes: 26.05 Preview
1. Bug 17387  - Add an undelete feature for items/biblios
   
2. Bug 32773  - Have the ability to have more than 1 Fast Add framework - Brendan Lawlor at CLAMS submitted this update!
   
3. Bug 28530  - Allow configuration of floating limits by item type
   
4. Bug 39320  - Create a ‘landing page’ for ERM
   
5. Bug 37762  - Expand ILL to allow for supplying agency/lending library workflows
   
2.  Monday Minutes: Undelete Feature for items and biblios 
   
1. Bug 17387- Add an undelete feature for items/biblios
   
3. Monday Minutes: ERM Widget
   
1. Bug 39320  - Create a ‘landing page’ for ERM
   
4. Monday Minutes: Custom Debit Descriptions 
   
1. Bug 40255 - Allow custom debit descriptions
5. Monday Minutes Duplicate Bibliographic Record Check
   
1. Bug 41902 - Allow configuration of bibliographic information to be shown on new record duplicate check
   
6. Monday Minutes: Prevent Itemtypes from  
   
1. Bug 41267 - It should be possible to prevent some itemtypes from filling other biblio level holds
   
7. Monday Minutes: Acquisitions Enhancements
   
1. Bug 38207 - Add vendor payment methods
   
2. Bug 38262 Add additional fields to vendors
   
8. Monday Minutes: Self Checkout While holds Are Waiting
1. Bug 23909 SCO allows to check out items with Waiting state if AllowItemsOnHoldCheckoutSCO
   
9. Monday Minutes: Enhanced EDI Message
   
1. Bug 40383 - Modernize the EDIFACT Message display modal provides an improved EDIFACT message viewer with a new interactive modal interface replacing the previous basic display.
10. Monday Minutes: Authorized Values for RDA
    
1. Bug 39418 - Add authorized value lists for MARC21 RDA Carrier, Content, and Media Vocabularies.
   
11. Monday Minutes: Fast Add Frameworks 
    
1. Bug 32773 - Have the ability to have more than 1 Fast Add framework
12. Monday Minutes: Report DataTables 
    
1.  Bug 42190 - Add datatables to reports
   
13. Monday Minutes: Import and export MARC modification templates
    
1. Bug 16994  - Import and export MARC modification templates