The alpha3 version has been released during the night . Annoucement will be made in the morning.
Small changes have been made in the 3d library. This could fix some people bugs, but it's difficult ot be sure about it, as in involve hardware, OS and JRE version as well. I just hope it will not introduce new issues.
I request visitors help for testing and report new issues, compared to 0.7alpha2. Normally it should be fine.
Download here