The "inside" docs were remastered for HD with previous Blu Ray releases. Unfortunately, the remaining films new to blu this year still have the old SD docs, they didn't bother to upgrade these ;o(

And yes, the footage for the films in the original releases do use laserdisc footage. The Documentaries were started in late 1994 and were in production into 1996 for planned laserdisc special editions, but dvd came around and they saved them for the 99/2000 releases. Although a few were released on laserdisc, Thunderball and Goldfinger made it to laserdisc and vhs.