If you are waiting to jailbreak your iOS 8.0-8.1 device until things are "stable enough": we now seem to be ready! ;P http://en.pangu.io/
He also announced that developers can now mark their tweaks as iOS 8 compatible making them available to purchase via the Cydia Store.
Cydia vendors can now mark their products as iOS 8 compatible. (The jailbreak platform itself is now stable enough to make this reasonable.)
Earlier today, the PanguTeam released an updated Pangu8 1.2.1 jailbreak utility for Windows that includes Cydia 1.1.16. They also announced a Mac version could be released in a few days.
If you have yet to jailbreak your device, you should do so soon. Apple has already seeded iOS 8.1.1 to developers which breaks the Pangu jailbreak. You can find instructions on how to jailbreak your specific device using the iClarified Jailbreak Wizard.
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