Editors are not encouraged to get into dialogs, the email is really intended for sending information to editors, and many editors do not reply.
You could have got our best answer to this by reading the forum FAQ.
I don't know what sites I'm going to review tomorrow, I don't have a good estimate how many sites I'm going to review next week. I do know how many sites I reviewed last year, and could not say if the number I review this year will be more or less. The number of sites I review next month has no connection to what I reviewed last month. With that uncertainty - the ability to answer someone about when a specific site will be reviewed is somewhat impossible for most editors.
If an editor has one category, and your site is the only one waiting to be reviewed, maybe that editor could make a guess - but no one else could predict when he would review that site.
Now I could make a guess, but it's a lose-lose - if I tell you it will probably be reviewed in 3 months and it takes longer you will be unhappy, so let's say I play it safe and tell you 4 years, you will be extremely upset.
As another editor said earlier today, if you get an answer how will it change your life and what you do with the information anyway?
f I tell you I guarantee it will be listed this week, does that mean you sit back with a smile waiting for the revenue to pour in?
If I tell you for sure it will take at least four years - do you close your business, and declare bankruptcy knowing that you will never make it on the internet?
The truth is that getting an ODP listing will at best have only a marginal difference in your business. What really counts are many other factors, and you should be working on those things.