refusal computing - Undelete in ext4?

In a previous post I discussed the undelete feature of version 2 of extended file system for the Linux kernel (ext2) and how it doesn't exist in version 3 (ext3). Someone asked in a comment about ext4. I found this in the frequently asked questions on the Ext4 project Wiki.:

Can I undelete files in Ext4?

No, in the same way that the ext3 journal requirements to be consistent after a crash prevent undelete of ext3 files, it isn't possible to undelete ext4 files.

However, the page with the list of New ext4 features has:

Undelete Feature for Ext4

• Primary Developer:
• status: Idea was proposed on the mailing list, still need more thought on the feature.
• Change on-disk format:
• Target Date:
• e2fsprogs changes:
• outstanding issues: Should the kernel be involved with undelete

I found this thread on the Ext4 mailing list archives Secure Deletion and Trash-Bin Support for Ext4. Apparently, people wanting secure deletion have something in common with people losing their files. I couldn't find anything further as to the patches status in ext4.