The 8830 appears to only support rel 0... From: CDG : Technology : 3G-CDMA2000 Devices
Company: Research In Motion
Model: Blackberry 8830
Device Type: Smartphone
Band: 800/1900 MHz
Technology: 3G xxx8211; CDMA2000 1xEV-DO Rel. 0
Operator: Verizon Wireless
Available Date: Commercial
Market: United States
Size: 4.49in x 2.60in x .55in
Weight: 4.6 oz
A pretty accurate "official" deployment page can be found on the CDMA Development Group website at: CDG : Worldwide : CDMA Worldwide
A better "unofficial" way is to monitor the various rumor/industry sites like Blackberry forum.
It is well know that both Sprint and Verizon are rapidly deploying rev A to stop the continuing erosion of their user base to the more consumer-friendly, device happy AT & T.
I hope this helps,