TIM Italy has already posted 22.214.171.124 release for Blackberry Curve 8900, but in case you need it, here is the information on release from Rogers.
Software For BlackBerry® Curve (TM) 8900 smartphone
BlackBerry Handheld Software v126.96.36.1998 (Multilanguage)
Package Version: 188.8.131.528
* Applications: 184.108.40.206
* Software Platform: 220.127.116.11
* File name: 8900M_PBr4.6.1_rel378_PL18.104.22.168_A22.214.171.124_Rogers_Wireless_Inc.exe
* File size: 123.35MB
NOTE: Don’t forget to delete the vendor.xml file located in c:program files>common files>research in motion>apploader to install it on a different carriers device.