Just wanted to post links for all the betas I could find on the board for others:

Curve 8300:
http://rapidshare.com/files/130042348/8300M_PBr4.5.0_rel75_PL2.7.0.66_A4.5.0.52.zip

Curve 8310:
http://rapidshare.com/files/129991266/8310M_PBr4.5.0_rel75_PL2.7.0.66_A4.5.0.52.zip

Curve 8320:
http://rapidshare.com/files/129995655/8320AllLang_PBr4.5.0_rel75_PL2.7.0.66_A4.5.0.52.zip


Pearl 8100:
http://rapidshare.com/files/129995205/8100M_PBr4.5.0_rel75_PL2.7.0.66_A4.5.0.52.zip

Pearl 8110:
http://rapidshare.com/files/129727952/8110.42.zip

Pearl 8120:
http://rapidshare.com/files/129721804/8120.42.zip

8700:
http://rapidshare.com/files/129724282/8700.42.zip

8800:
http://rapidshare.com/files/129731117/8800.42.zip

8820:
http://rapidshare.com/files/125873990/8820_4.5.0.46.exe


Blackberry OS 4.5.0.44    
http://rapidshare.com/files/124014624/8310_PBr4.5.0_rel62_PL2.7.0.61_A4.5.0.44.exe

http://rapidshare.com/files/124012504/8320M_PBr4.5.0_rel62_PL2.7.0.61_A4.5.0.44.exe