Simply visit get.skyfire.com or m.skyfire.com from your mobile browser to get the latest version. If you have an AT&T E71x that was previously having issues you will be happy to know that 1.0 runs just fine on the device. I had to first remove the 0.85 version that was mostly working (the soft key buttons were off) rather than update to get things working, but now I have Hulu working on my sleek Nokia E71x.
Skyfire runs on Windows Mobile and Symbian devices from HTC, LG, Motorola, Nokia, Palm, Samsung, Sony Ericsson, and T-Mobile. They also announced that Skyfire is coming to the BlackBerry platform soon (there is a private alpha test going on now) with a rollout of a public beta being announced and tested just like Skyfire 1.0 was for WM and Symbian before.