My mind is fickle.
On one side, I would like my next novel to be different to the zombie genre so that I stagger the Zed trilogy (and don't get pigeon-holed) to its final completion but now think that this might be the wrong strategy, and so, have decided against it. At this point in time I am aiming to write the last two books in short succession of each other over the next few months.
My view is to write, refine and release the books with a manufactured six-month delay between the two of them. I think that would be best and I think the last two books would benefit from this as I would be able to maintain a more even tone through the remainder of the series rather than having to rediscover my voice each time.
If I can pull this off I will be 'quite the hardened author' in the end. Despite the teething problems of the first one, I think that each successive book should be simpler to knock into a final polished shape. I believe I have developed an interesting story arc and this should result in a great conclusion to the trilogy. Well, here's to hoping the general public also agrees with me ... and here's to facing up to the challenge!