I honestly can't say because I don't know. To me, if they have lost the old paper supplier, it should affect the entire line, but that's just a personal opinion, NOT fact. I'd trust what the great folks at Boogie says.
I have heard some other brands of cabinets with V30's in them (newer ones made within the last 2 years) and to my ears, they would slice ice wide open.
This topic would take a considerable amount of research, phone calls, and e-mails to various suppliers to uncover the whole truth. There are a few 'boutique' amp companies out there, so I have been told, hooks up each and every V30 that comes in to a variac set to a very low voltage (probably somewhere between 5 & 15 volts), for 24 x 7 ( that's 24 hours per day for seven days ) to 'loosen them up' prior to actual installation in an amp. I would never recommend this unless approved by Celestion beforehand.
Once again, the Boog V30's and C90's are custom made for them by Celestion and the process is STRICTLY controlled and each shipment is inspected upon arrival.
However, since I became aware of this information, I myself have refrained from the purchase of any Celestion product and am on the search for a replacement. I'll chime in once I find it. It will take me some time to find and test because I have to pay street price on speaks.