I have found the manual for CPG 1.5.1 and it includes many features that are not in 1.4.x that are requirements for me. Like Watermarking. Unfortunately I can not find any available download. What is the status with 1.5.x? Is it released or not? If not how can I do watermarking?
1.5 is not released yet and it is in development stage. You can only have it from the subversion repository (not recommended for a normal user).
There are plenty of watermarking mods available for 1.4.x. Perhaps you failed to search the board.