Bethesda has obtained the rights to develop Fallout, they've licensed the Fallout franchise from Interplay (except the MMO license)

Well let's get started shall we, first let's do some history lessons:

IPLY originally begun working on Fallout 3 just after Fallout 2, but it ended up being scrapped.
IPLY again started working on Fallout 3 in 2003 and called the project Van Buren, which also ended up being scrapped.
Bethesda has now begun pre-production on Fallout 3..

Fallout 3 - Bethesda

Bethesda - Fallout 3 Links:

Interviews:

Chronological history of Fallout 3 (Bethesda)

13 of August 2004: First Fallout 3 release date
05 of August 2004: Pete talks to DAC
29 of July 2004: Fallout 3 talks is a go in the Bethesda forums
27 of July 2004: Fallout 3 talks banned from Bethesda forums
23 of July 2004: Pete Hines explains misquotes
19 of July 2004: CVG talks to Pete Hines
18 of July 2004: Pete Hines talks to Gameplanet
15 of July 2004: Gamingsource talks to Pete Hines
15 of July 2004: Telefragged talks to Pete Hines
14 of July 2004: Q&A with Todd Howard (Ex.Prod Bethesda)@Gamespot
14 of July 2004: Fallout 3 by Bethesda editorial by Rosh@NMA
14 of July 2004: Pete Hines talks to NMA
13 of July 2004: RPGVault talks to Pete Hines
13 of July 2004: Gavin Carter (ass.Prod Bethesda) talk about Fo3
13 of July 2004: Gamespy talks to Pete Hines (PR Bethesda) about Fallout 3
13 of July 2004: HomeLAN Fed talks to Pete Hines about Fallout 3
13 of July 2004: Gary Noonan (Graphics dev@Bethesda) talks about Fallout 3
13 of July 2004: GameGestapo talks to Pete Hines about Fallout 3
13 of July 2004: Another Bethesda dev talks about Fo3
12 of July 2004: IGN Talks to Pete Hines about Fallout 3
12 of July 2004: Bethesda Press Release
12 of July 2004: Interplay announces Fallout license goes to Bethesda@Yahoo