We are done with the changes and it is working fine in Network. However, due to extensive feature changes in font upload folder and font info storage, we are not yet ready to go live. We are going to test it in multiple installation to check how migration goes from old to new version.
So far the migration is going easy and it should work fine for you as well. If you wish i can send you the 4.0 release. And there won’t be any problem for you when 4.0 is released for all.