This article describes some of the major changes visible to users in Thunderbird version 91. Full details of all the changes can be found in the <a href="%(release)s">Thunderbird release notes from 91.0 and up</a>.
Þessi grein lýsir nokkrum af helstu breytingunum sem eru sýnilegar notendum í Thunderbird útgáfu 91. Nánari upplýsingar um allar breytingarnar má finna í <a href="%(release)s">útgáfuupplýsingum Thunderbird 91.0 og nýrri</a>.