At Mark Hoppus' talk at the Oxford University Union last night, Mark stated in the post talk Q&A that Tom was due to start pre-production on the new Blink 182 album this week. They are also aiming to get it out by this time next year and that they were going to try to record as much as possible together.
They need time off, maybe a few weeks at separate times where they just stay at the same place (like self-titled) or stay in the general area. Up All Night was written during Blink-182 sessions, and finished during Neighborhoods, imagine if it was finished back when. Most of Neighborhoods was just dump and fillers, MH was a joke, almost an insult. Either get together as a band or break up and make separate music,