Today (07-Feb-2013) will be the release of new hotfix packages for ArchiCAD 16 and ArchiCAD 15.
The ArchiCAD 16 Hotfix 3 (Build 3482) Gives solution for several crashes, fixes documentation, selection, display issues and IFC related problems. It also improves performance in certain cases. You can read the Release Notes and download the hotfix for all platforms here:
The ArchiCAD 15 Hotfix 5 (Build 4056) fixes important Teamwork and IFC related problems, provides solution for crashes and documentation issues. It also improves display quality on Mac computers with HiDPI display. You can read the Release Notes and download the hotfix for all platforms here:
NB: Working in Teamwork requires that client ArchiCADs, the BIM Server Manager and the BIM Server all have the identical version number (or “build number”).If you are running a client ArchiCAD whose version number is different than that of the BIM Server, you cannot continue working in Teamwork until the same hotfix is installed for the BIM Server. (The same is true for all the other client ArchiCADs working from the same BIM Server.)Therefore, if you decide to update either a client ArchiCAD or a BIM Server, be aware that you must update all clients and the BIM Server so that they share the identical version number.