The latest update which was just moved from beta testing to default included the following changes.
- Abilities now scale with the damage stat and are much more useful on higher OS levels.
- Explosive damage from player weapons also scales in similar fashion. This should make weapons with explosive damage more potent (it's also easier to blow yourself to bits if you're not careful).
- Explosive damage is also taken into account in base damage calcs
- Railgun loses less damage when piercing objects (33% loss instead of 50%)
- Submunitions now has a 25% chance to trigger (was 20%), but spawns fewer grenades.
- Psycho Darts can now convert named variants (Keymaster, Sergeant, etc), but unique minibosses (name written in white) are still immune.
- Fixed a bug where a converted Grenadier wouldn't attack enemies
In general the OS levels after 2.0 should be a clearly easier now when your damage stat starts to get over 50 and the enemies get more hp. The scaling also affects the 1.0 a bit if you spend a lot of credits on buffing damage.