The iPhone Dev Team quietly released redSn0w 0.9.10b7 for Mac and Windows on Friday. The new version features a few improvements like the addition of the Corona A5 untethered jailbreak for the iPhone 4S and iPad 2. Version 0.9.10b7 also includes a re-install feature for jailbreakers who accidently uninstall the untether, and it can pull your SHSH blobs from the Cydia Store when injecting an IPSW.
RedSn0w 0.9.10b7 also supplies new information about your device. For example the Dev Team blog says it lets you know "whether your iPhone 3GS has the vulnerable baseband boot loader, or whether your iPhone 3GS has the old exploitable bootrom." The Dev Team also noted that "the next new feature to be added will be built-in restore support, to provide an alternative to iTunes restores."