Totara 2.2.8 is a "snapshot" release, containing bug fixes.

For those of you with Totara installations using the Microsoft MSSQL database platform this also fixes some MSSQL-specific issues with the upgrade to Totara 2.2.7 - if you are on an earlier version of Totara 2.2 and using MSSQL, we recommend bypassing 2.2.7 and upgrading to 2.2.8 instead.

Here's the 2.2.8 changelog:

Release 2.2.8 (18 October 2012):
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Database upgrades:
    T-10028     Fix totara_sync MSSQL error on upgrade from 2.2.6
    T-10026     Fix Facetoface MSSQL error on upgrade from 2.2.6
    T-10002     Fix Site Policy URLs on upgrade from 1.1
    T-9886      Fix memory leak on upgrade from 1.1 where there are large numbers of messages

Bug fixes:
    T-10008     Fix issues with MySQL temptable in totara_sync
    T-10023     Fix HTML table padding
    T-9855      Fix dynamic ruleset required field message in Audiences
    T-9834      Fix for calendar breadcrumbs
    T-9674      Fix for Facetoface manager approval message strings
    T-10022     Fix Javascript error on Programs Assignments tab
    T-9885      Fix references to moodle in language packs