As it happens, Dan and Dejan have let me manage the Jettison project from now on. And thus I'm happy to announce that Jettison 1.3 has been released.
Jettison 1.3 has had two patches from CXF users applied.
MappedXMLStreamReader can now read top-level explicit arrays containing qualified and unqualified tags - this allows JAXB to deserialize such JSON sequences into explicit collections (lists, etc). For this to work, the support for older convention assuming a top-level array may only contain a single node had to be dropped. Additionally, simple tags explicitly set to null have no CHARACTER events reported.
I think the good news is that Jettison will keep moving forward. One thing I'd like to clarify is that I won't be actively working with Jettison - however you can definitely expect patches addressing open JIRA issues being applied. Jettison has a small code base, so if you use it and see some issue then just check out the trunk and create a patch.
This latest release has really being driven by lingering issues opened against CXF JAX-RS but you don't have to use CXF for Jettison JIRAs be fixed - if you like working with Jettison then providing a patch is the only thing you need to do for the given issue be addressed :-)