Could it be possible that NVM 1 and 2 wont be on sale :(
There are two D&D packs. One is the classic pack containing Baldur's Gate 1 and 2, Icewind Dale 1 and 2, Demon Stone, Dragonshard, Temple of Elemental Evil, Neverwinter Nights 1 and 2 and Planescape Torment.
The pack on sale now is made up of enhanced edition games, all made by a different developer from the original classics.
They look similar, but they're seriously different in content.
Unless GOG does more new bundles, the classic pack you're hoping for isn't going to appear.
Edited for clarification. (Hopefully.)