I got rid of JBPatch & Fonthack. Left CollectionsManager, Kindlet Jailbreak & jailbreak. Installed the update with no problems using usb. Works perfectly.
First impressions:
I was surprised how fast you can navigate now. Like wow, really fast.
ReadingTimer is awesome. Always wanted this feature.
The new layout (top bar) looks worse but menu is a definite upgrade for me.
The previous keyboard looked better.
Guess I need some time to get used to these things.
I don't care for the cover view or other fancy stuff.
CollectionsManager is still there but of course it doesn't work.
Conclusion:
After few hours I can honestly say I like the update...
but it doesn't mean I don't miss JBPatch...
so... ixtab, don't give up man, you're the reason kindle is the best e-reader out there