There is no second Deadman Wonderland series that has been green-lit, much less ready for this season. Unfortunately, there probably will not be one, as DVD/BD sales of the series in Japan have been poor.
Unless you prefer being surprised, there is no need to wait for Crunchyroll's announcements to know what series are and are not premiering each season. There are a number of reliable sources of such information. Checking Countdown once a week or so can keep you apprised of what is coming up, and takes less than a minute.