As I mentioned in the minichat a couple days ago, Mo' Creatures for 1.7.10 is out. We've been busy getting everything squared away on our end for the update. DCM is working on an Opals Plus update as we speak, and I have it on good authority that it has a number of nice goodies in it that will make it worth trying out. I've mostly concentrated on getting the plugins figured out. Some plugins have updates that involve major changes. Some plugins haven't updated at all. Essentials apparently can't update due to a DMCA also being filed against them. A couple others seem to be abandoned. Needless to say, there may be some bugs. Report them as you find them and we'll do what we can. In some cases we may have to resort to changing to a different plugin, or removing a plugin entirely, but that will be a last resort measure.
You can also prepare for the coming update as well. You can start by installing the newest version of Forge for 1.7.10. It has to be the newest one. If you insist on using an older one, no technical support will be given. In addition, you can go ahead and download the new version of Mo' Creatures and CMS. When the Opals update is available, a link will be added. Are you still using some 1.7.2 mods, or think you'll still want to use them for some servers? There is now* an option to add version folders to your Mods folder. Simply make a folder that named "1.7.2" and another folder called "1.7.10" both INSIDE the Mods folder. Place the appropriate mods in the right folder. For people who also play on the PumpkinFly's World server, you can do the same for those mods as well. Once the update happens, both servers will be running the same version of Opals from then on, so you should be able to connect to both without compatibility issues.
*This ability has actually been in Forge for a while now, at least since 1.7 came out, it just isn't advertised on their website.