So, Dave’s redistricting app now supports New Jersey. Keeping in mind that no political data is available, I stuck to the current district lines as much as possible. The biggest changes are in north and central Jersey, which had to lose a district. Merged are the two GOP members from the old 11th and 7th. Now both can attempt to run in the new 7th.
The old 13th was renumbered 11, and retains a healthy hispanic plurality (if not quite majority). The Black majority of the 10th is also protected.
With the exception of Rush Holt, who may have a slightly more difficult district (with some more work I may have been able to avoid this), I believe that the entire Democratic delegation is protected.
This is all supposedly based on 2008 estimates, but I think Dave would have to tell you exactly how he aggregated the numbers.