目前，typecho 1.2.1正式版已经提供下载通道，直通车:https://github.com/typecho/typecho/releases/tag/v1.2.1.
本次官方更新了以下内容:

 Fix checkVersion by @sy-records in #1356
修复Sqlite目录带.校验不通过问题 by @maoxian-1 in #1357
Pr/1344 by @joyqi in #1360
Fix pgsql reset id error by @sy-records in #1369
Update admin welcome tip by @sy-records in #1389
Enhancement of Typecho\Cookie by @sy-records in #1399
fix CORS issues in preview page. 修复文章预览页面跨域问题 by @Valpha in #1400
模板缩略图支持识别webp图片后缀 by @jrotty in #1403
修正注释 by @jrotty in #1411
Fix notice not clear by @sy-records in #1416
修复管理员进入其他用户文章列表时显示所有文章的bug by @jrotty in #1415
Fix QUIC/https Mixed Content by @MBRjun in #1423
Add admin/footer.php begin plugin by @sy-records in #1426
Fix missing change themeUrl by @sy-records in #1431
Fix category creation error when using xmlrpc by @sy-records in #1443
Fix #1449 by @sy-records in #1450
Minor update by @vndroid in #1451
Minor update by @vndroid in #1460
Fix the error of getting request parameters by @sy-records in #1464
Fix multiple calls returning the same object (#1412) by @benzBrake in #1478
Fix use SQLite error of windows install by @sy-records in #1471
Adjust style of edit comments by @sy-records in #1483
Fix comments feed jump error by @sy-records in #1491
Fix #1495 by @sy-records in #1496
Fix unsafe use of jQuery .html() by @l2dy in #1382
Fix htmlspecialchars error for feed by @sy-records in #1522
Use https links by @l2dy in #1280
Support ssl for pdo_mysql and mysqli by @sy-records in #1525
Fix: php 8.1 strtolower not allow null value by @benzBrake in #1559
Fix an XSS vulnerability in v1.2.1-rc by @FaithPatrick in #1561
fix php 8.1 Deprecated: htmlspecialchars(): Passing null to parameter #1 by @benzBrake in #1570
Add a prompt message for manual database creation by @sy-records in #1348
fix #1574 by @joyqi in #1575
improve release ci, upload built asset after new release published. by @joyqi in #1576
重复执行判断的优化 by @logdd in #1586

总结:适配PHP8.1,XSS攻击防护优化,其他系统修复级优化
然后，本站因为迁移图片和静态源站分开，然而upyunfile插件500报错，更新需要停止一段时间（用于维护站点文章）