truecrypt-4.3a has been released on 2007-05-03. See $URL for ChangeLog. Renaming truecrypt-4.3.ebuild worked for me.
Thanks!
Hrm, shouldn't this version have a GLSA and quick-to-STABLE release? From the History page on version 4.3a: http://www.truecrypt.org/docs/?s=version-history "Security improvements: * Linux: When running without administrator privileges, TrueCrypt automatically attempts to elevate its access rights (if necessary) using the sudo command. The Linux version of TrueCrypt no longer supports the set-euid root mode of execution. These changes also prevent all discovered and undiscovered (if any) security issues related to the set-euid root mode of execution, including an issue affecting all previous Linux versions of TrueCrypt where a local non-administrator user could cause a denial of service or gain administrator privileges." Thanks.
No. See bug#173443.