Totara 2.5.4 is a "snapshot" release containing bug fixes and improvements.

Here's the changelog:

Release 2.5.4 (24th December 2013):
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New features:
    T-9788    Added "Program enrollment date" event to the program completion criteria options

Improvements:
    T-11669    Made the "Date Created" field editable for learning plans
    T-11703    Expanded help relating to course and program visibility
    T-11708    Added new optional column "preferred language" to reportbuilder user report source

Bug Fixes:
    MDL-34481  Ensure that completion is recalculated on next cron run following changes to completion settings
    T-11725    Backport MDL-43019 to fix IE11 crashes in SCORM
    T-11231    Fixed an issue with certification completion records missing if user is unassigned
    T-11695    Program report source now conforms to audience visibility
    T-11705    Fixed potential call to nonexistent function while updating program assignments
    T-11719    Fixed broken appraisal activation when secondary or aspirational positions are used
    T-11659    Fixed "Goal Assignments" title duplication when assigning a position, organisation or audience
               competency to a goal
    T-11707    Fixed "Assigned Goals" section duplication when adding goals and competencies to an organisation
    T-11607    Fixed dates when importing certifications using the historic import
    T-11710    Fixed the "CC managers" setting for facetoface notifications
    T-11245    Removed hover style in list of courses/programs
    T-11688    Removed link to blogs when they are disabled
    T-11684    Certification completion date is now used for expiry and recertification window calculations
    T-11702    Minor fixes related to visibility of programs and certifications
    T-11713    Fixed completion import when certification shortname contains an ampersand
    T-11674    Fixed user profile date fields being set to 1970 when disabled
    T-11629    Fixed emails not being sent when manually resolving Program exceptions
    T-5879     Fixed typos in English strings in 360 Feedback, Audiences, and Hierarchy
    T-11731    Fixed broken certification unit tests in MySQL with sql_auto_is_null setting enabled