The recent update was for both editions of the X-T1 and the X100T. With camera body firmware version 3.10 improvements were made to the flash function, WiFi, display, and general camera stability -- whatever that means. The X100T had several fixes also, including the one to the flash function. Additionally, the X100T improvements are to the ERF viewfinder, improved focus peaking for low light, plus a new menu notice when using conversion lenses.
Four XF zoom lenses also received improved stability OIS updates. This includes the following zooms: XF10-24mmF4(V1.01), XF18-55mm (V3.12), XF18-135mm (V1.01) and XF55-200mm (V1.12).
Links to all these updates can be found below:
Fuji X-T1/X-T1 Graphite Silver Edition Ver. 3.10
Fuji X100T Ver. 1.10
XF10-24mm f/4 Firmware Update Ver. 1.01
XF18-55mm f/F2.8-4 Firmware Update Ver. 3.12
XF18-135mm f/3.5-5.6 Firmware Update Ver. 1.01
XF55-200mm f/3.5-4.8 Firmware Update Ver. 1.12