Not to be a "Debbie Downer" but... Western Electric/Charles Whitener has been talking about restarting 300B production pretty much since they stopped about 7 or 8 years ago. At this point, it's a "I'll believe it when I see it" proposition.
Don't get me wrong, I would like this to be true as much as anyone. Of course if it does happen, you have to wonder what the price will be. With the original reissue price of around $800 - $1000/pair (17 years ago) and current Japanese Takatsuki 300Bs going for about $1800/pair, the sky's the limit. Maybe this is what's drawing Mr. Whitener back into the market?
Think I'm going a bit overboard here? Take a look at the pricing page on the WE website. They have WE 396As listed as "In Stock" at $300 a pop. If those are NOS, they are only about 10 times market price. If they are new production, which is very unlikely, could they possibly be better than early 1950s vintage?
Remember, I'm just the messenger.
Gerry