dukthepope: So does 1.005 have all the bug fix of 1.004 (scorpion, true sight, etc...)
Actually, it was when the patch to fix a serious new bug in 1.004 was released that some of the changes and fixes in the disk version patches were lost. Some of the fixes in the 1.33 disk patch are in the download version, and some are not. The 1.005 version and 1.006 were actually very similar in terms of bug fixes, though as Tarnum said, GOG has the 1.006 version now, to bring it in line with the Steam / anthology releases.
True Shot and the damage portion of Crossbow Expertise remain broken in the download version, and you can not return Finnigan's lockpicks to complete the quest and buy them back (and he is not a decent merchant). Most of the remaining issues are relatively minor, and/or there are other fixes or workarounds if encountered. Scorpions are still overpowered, but would be unlikely to be fixed now even if there was another patch, since they are recommended in so many walkthroughs, etc, as a strategy for defeating tough opponents.