Yes indeed; Terry's book is provisionally scheduled for the second half of 2021.
Paul is working on a book on line infantry uniforms which will hopefully be the first part of a multi-volume set on French uniforms of this period.
Please bear in mind that with projects this far from completion, it is very difficult to give precise information about publication dates. We work in six-month blocks when planning publication, and not infrequently it is necessary to move titles back by a block if there are delays at any stage in the process: usually this happens before we announce the title as being due for release, but last minute delays can still occur. Less frequently (but it does happen!) titles can get brought forward if everything is delivered early and a gap can be found in the production schedule.