The BlackBerry Javelin will replace the BlackBerry Curve when it's released. Interestingly, there will be no 3G support, but the Javelin will have GPS and WiFi. CrackBerry has posted some nice pictures of the device that you can see at the link below.
Javelin Specs:
# 512 MHz Processor
# 256 MB onboard flash memory (more room for apps)
# Hot-swappable microSD slot - located under the battey door
# 480 by 360 high-res HVGA+ display
# 3.2MP camera
# Micro USB charging/syncing port, w/ high speed data
http://www.blackberryblast.com/articles/2008/8/2008810-More-BlackBerry-Javelin-Pictures.html
HOW EXCITING