Unfortunately, since my post count is low, I'm unable to ask this the official thread for Omega, but rather have to ask it here in the Q&A section.
The most recent Omega ROM based on Samsung's release is v58, built upon Samsung's XXUGNB6. However, it appears that Samsung has since then released at-least 1 update: XXUGND5 around 2014-April
Other Samsung based ROMs (like Android Revolution HD v52) have moved to XXUGND5, but I like Omega and would prefer to not move to another ROM.
The other Omega ROMs (AOKP & Omni) seem to be regularly updated, so I'm wondering why Omega didn't embrace this Samsung ROM.