Steven, can you define what you mean by the "old vacuums"? The CT 22/33, the predecessors for the CT 26/36, were discontinued almost a year ago. I would be very surprised if dealers still have them.
You'd be surprised to see what kind of old stock dealers sometimes have. One dealer around here still had a new PS200 in stock until a couple of months ago, for full price while the PS300 was already discounted because of the Carvex.
I've been looking around here to try out the new CTL Mini with increased suction, but all dealers still only have the old one in stock even though the update came out a couple of months ago now.
The boxes aren't marked in any way to identify that they have a HEPA filter at this point. Although, that will be changing. Please send me a PM or email (sho@festoolusa.com) and I'll check our internal records for the units sent to your dealer to see if they had the HEPA filters or not. We have been shipping them with HEPA for about 2-3 months now.