By coincidence I saw the newest book "Eulalia!" in the shop today - it was the big paperback version ("trade paperback"?) rather than the smaller one like the rest of my collection.
The really annoying part of on-going series like this is that they keep changing the cover design, so those of us that have been collecting them for years have a mis-matched set or have to re-buy them all.
I know someone who used to work for the distributor here in New Zeland, so I was given a then pre-release proof copy of "Triss" which I still have on the shelf next to the proper version.
If you like Redwall, then you might like the two "Welkin Weasels" trilogies by Garry D. Kilworth. Some "Redwallers" don't like them, but most do - I think they really well done semi-parodies of Robin Hood and Sherlock Holmes (with all sorts of other "easter eggs" thrown in too).