As I'm waiting it as well, I've checked the status of patches [1] no later that yesterday, and as you might see - it's heavily in progress.
Reviews for some patches were left just couple of days ago.
But 1 thing is clear - this won't happen for 2024.1

[1] https://review.opendev.org/q/topic:%22bp/manila_shares_attachments_v7%22

On Fri, Mar 1, 2024, 23:46 Thomas Goirand <zigo@debian.org> wrote:
Hi,

I've been waiting for this promising feature for a long time already, so
I went to check, and saw that in launchpad [1], the blueprint seemed
implemented. Though I didn't see anything in Manila's docs about it.

So what's the status of this driver? Is it soon ready?

Cheers,

Thomas Goirand (zigo)

[1]
https://blueprints.launchpad.net/nova/+spec/libvirt-virtiofs-attach-manila-shares