Actually, I haven't decided on that issue yet. Currently, I am leaning more towards not allowing them to be saved, but allowing them to be spent on things across 2 levels (i.e. pay some DP for something in one level, then pay the rest the following level - of course, not gaining access to whatever it is until the full cost has been paid).
As it currently stands, there are only a few talents that cost more than a single level's worth of CP, and those are marked as not being Trainable (i.e. you can only purchase them during character generation), so this isn't likely to be a major issue.
And also - welcome to the forums.