Well this is great news for all you Verizon iPhone holders who want to jailbreak your phone on the newest OS, 4.2.8. Before today 4.2.8 was only jailbreakable in the unteathered form for windows users using sn0wbreeze 2.7.1. PwnageTool can now be used to jailbreak 4.2.8 using a mac.

Since an updated version of PwnageTool was just released for mac, I will list that one first. The download link also contains a video file released by the developer that will guide you through the whole process.
PwnageTool for mac 4.2.8.

If you are using a windows machine, and are running either 4.2.8 or 4.3.3 this version is for you:
Jailbreak 4.2.8/4.33 for windows.

There you have it, so if you have a verizon iPhone on 4.2.8 you can now jailbreak it using either PwnageTool or sn0wbreeze. This method will also for for the iPhone 3GS, iPod Touch 3G/4G and the first iPad, do not try it on the new iPad. As always post any questions that you have.