My understanding is that Interplay plans to continue with V13 with or without the Fallout license. However, it could be difficult to release much information on the game if they don't know whether they can use the license, so hopefully this means the contract dispute will be over soon.
When it is I imagine we'll hear about it promptly. If Interplay retains the license, or negotiates a new contract to retain the license, they'll want to get that out quickly. If Interplay looses the license it's probably in Bethesda's best interest to make that public, although they wouldn't be in the same rush.
Honestly, I was always a little confused as to how that agreement benefitted Masthead to begin with. I was never clear on just what they were getting out of the deal.
Yeah, that confuses me as well.