I've said this before in a few places, and it's (semi-) relevant here, but I really think people need to relax about replacing TrueCrypt. Despite the "security concerns" expressed in the TrueCrypt page,
which were clearly a joke, there's no reason to think TrueCrypt has any significant vulnerabilities at this time, and the second phase of the audit will take place as scheduled. The last time TrueCrypt was updated was
two years ago - it's stable software that doesn't need constant tweaking, so the developers bowing out is not a problem.
Chances are, someone will either fork TrueCrypt (version 3.1 of the TrueCrypt license seems to make this a legitimate possiblity) or create a replacement, possibly using the same container format. TrueCrypt is pretty much just as good as it was before this happened. Give it a couple of months before you start switching over to some other solution (which is likely to be less "battle-hardened" than the incredibly popular TrueCrypt anyway, and thus somewhat more likely to be insecure). There's no rush.