Scott Everts, an Interplay veteran, who did all the maps for Fallout and some maps for Fallout 2 is also involved into development of Fallout: New Vegas.
His profile on BoardGameGeek says:
Stayed at Interplay for about 13 years where I worked on over 20 games. Some of the titles I worked on there were Star Trek: 25th Anniversary, Star Trek: Judgment Rites, Stonekeep, Fallout, Fallout 2, Planescape: Torment, Icewind Dale, Icewind Dale 2, & Baldur's Gate: Dark Alliance 2.
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Currently I'm working on Fallout: New Vegas. It's great to be working on a new Fallout game after all these years.
It is great indeed.