The phones are not radically different from earlier versions, but do offer several new features.
According to The Street, the BlackBerry Bold 9650 is "a candy bar smartphone with a 3.2-megapixel camera, a 'large, high-resolution screen, GPS and Wi-Fi (802.11b/g). It's made to work as either a quad-band GSM/GPRS/EDGE/UMTS or dual-band CDMA/EV-DO (Rev A) phone.'"
Gizmodo says of the Pearl 3G;
The itty-bitty gadget will offer UMTS/HSDPA and Wi-Fi (b/g/n) support along with GPS, a 3.2MP camera, an optical trackpad, a microSD/SDHD memory card slot, and all the goodies BlackBerry users are addicted to such as BlackBerry Messenger and BlackBerry App World.
The Pearl 3G will actually be offered in two different models: The 9100 which will have a 20-key condensed QWERTY keyboard (aka RIM's SureType) and the 9105, which oddly for a BlackBerry, has a 14-key T9 phone keyboard.
The two phones will be available beginning in May. The Pearl 3G will be on the Bell, Telus, and Rogers networks in Canada, while the BlackBerry Bold 9650 is heading to Sprint May 23 for $200 with contract.