The latest news on x10 mini pro firmwares over at XDA are as follows:
Flame.E v0.2[beta] (2.3.7 nightly) – a new release with sense styling
GinTonic.SE | v2.3.7 [reupp] – revival of GinTonic, Gingerbread 2.3.5
If you’re not up to date, or starting out from scratch here’s the best place to get your device rooted and a recovery installed:
ClockWorkMod Installer – Windows v4, Linux v4 – for Windows users it’s all self contained in the zip file, Linux users need to root first; there are links to the Linux Rooter in the thread.
If you’ve tested or use any of the firmware listed please give feedback to other users via the comments.