Here is an open beta of Pixelmon 3.2, using Forge 1.7.10. This is not being tested by us, so it's up to you guys to submit your bug reports.
Content wise, we haven't added anything to this. A few fixes, and the 1.7.10 update. Once we have a few things fixed and the version is good to go, we'll look to add content.
Download, change log and recommended Forge : - Downloads Page
Issue Tracker : - Bug Tracker