iOS 6 beta 2 is available for almost 2 weeks for the developers of applications for iDevice-s and of course immediately after the release of this version a iOS 6 was also published a method by which you could jailbreak them. Although redsn0w won't allow you to install Cydia during the jailbreak process, I also explained there the procedure by which you can install Cydia, but for now it is not recommended to use it. At the moment, few tweaks, applications and plugins are 100% compatible with Cydia and this can generate very large functionality problems.
Activator, Action Menu, Mobilesubstrate are the most important plugins for iOS, they are not 100% compatible with the new iOS 6, and here lies the main problem. 90% of the tweaks and applications in Cydia use at least one of these plugins and if they are not compatible with iOS 6, then you can expect those tweaks to have limited functionality or to generate system crashes operation. I for one say that for now it is not "worth" to jailbreak for iOS 6 beta 2, as long as those plugins are not 100% compatible with it. The same recommendation applies to future versions of iOS.
