Yes, they probably do, but surely there is plenty of time for a release this year, even more so because there doesn't appear to be a tour to organise either.
And that's the reason why is more likely they could delay it as much as they want or need, as they don't have to play a tour to promote it, so there is nothing in the calendar pushing them.
There is the Local Hero musical yet to be staged in London, and that might be something we already know that can delay them, but until Daniel Evans take his position at the Royal Shakespeare Company I think in late April, they are not doing anything about it. I truly hope that they could have the mixes of the new record finished so whatever they have to do is done, and won't interfere.
Same with that Dire Straits thing Guy said he's going to mix and can't say a thing. If it's something big like unreleased material, or special boxes or whatever, depending on how much work it would need, they might want to release it on Christmas, and that would coincide with the MK record, which is not a good idea commercially talking... And if that happens, I bet the record company would rather release the DS stuff first.