First it's really great to see some progress with this project. A couple of comments:
Are those chaff bags over the horses muzzles? - something that's obvious but that I haven't seen before.
A request - could you not use the sculptor who did the Austrian cavalry artillery? - the equine sculpting for this set is pretty poor (the figures and equipment are fine though), especially compared to the horses for sets 8101 - 8107
It's not clear from the drawings whether the two figures are wearing the same uniform - the first figure with two rows of buttons is correct for the later part of the Napoleonic wars - it's hard to tell if the second figure has a single row of buttons and if that's so, I don't know what that's appropriate for. Others may be better informed.
Again, I'm really pleased to see that this project is progressing!
Likewise: It is good to see things starting to happen on this long-awaited project. I'm wondering how the set would be configured? Two or three limbers and team and one caisson + team, all in the same box? Or separate sets for limbers and caissons? If it's a case of getting these out on the market sooner, then a combined limbers and caisson set would make sense.
Ecstatic and delighted. I'm also glad to see separate boxes of Limbers and caissons, suits my plan perfectly.
As to the points raised by Steve W, I think the horses are drawn very simply so I don't think there's anything over their muzzles, but again I could be wrong. As to the second driver he does seem to have either an open tunic or a single breasted version. Maybe another simplistic drawing causing unnecessary worry.