I currently don't have a release schedule. I may release one or two here and there, then release 20 in a single day.
I am doing my best to get as many levels posted as possible, in each of the current trails/side quests. The new format means that even if the levels are the same as the original game, they still need to be hand coded to meet current scripting requirements.
That being said, there are plans to reuse a lot of the older levels in the Roman trail, and some in the late Alphabets. Most of the Numeric levels will be brand new (hence the initial delay in posting new levels), and of course the Egyptian trail will be 100% brand new.
However, even if you recognize an older level, the egg pages, names and answers are most likely going to change. The solve methods, though, will be similar. Very few levels (if any) will be a direct copy/paste of an original CWoT level, though it will happen here and there.