New Features in Merlin 2.5
Network-based Collaborative Project Management
Collaborate with others on the same project file over the LAN or WAN with a single mouse click.
Access Control for Users and User Groups
Resources can be either single Users or grouped into Resource Groups both of which can be assigned to activities and/or given specific access rights.
Dynamic Planning Mode
Activities which haven't started yet can be automatically moved to the current date. This is great news for devotees of Agile Project Management.
Bi-directional Synchronization with iCal
Changes in Merlin are reflected in iCal and vice versa. You can also sync specific resources in a separate calendar.
Enhanced Financial and Cost Models
You can now compare planned vs. actual costs with the ability to determine accruals per cost entry.
The Elements

From the first Project vison right up to the Post Mortem-Meeting, Merlin offers you several practical information. These different types of information can be attached to a special activity, a phase or to the entire project. Compare this to a file that you would attach to an email. Similarly, Merlin attaches the Elements to an activity or other information to your project. These are perfectly saved and can be easily located at any time throughout the project.
The following Elements have been integrated:
Checklists, Events, Files, Information, Issues, Risks.