Oldman, Do you know if it will it be downloaded from the Larian site?

....Edit: I stand corrected, upon checking I got mine from Steam. Upon checking the Larian forum they say that the enhanced edition will be automatically added to the libraries of any who already have the game on either Steam or GOG.

I checked on the Larian site and if you purchase the game through their site you are basically getting the Steam version.

Okay, who is playing?

Full controller support for one and two players
Dynamic split-screen support for local co-op play
Sleek new UI for use with controller
Full AAA voice-overs for all characters
New sound effects and improvements made to existing effects
Main quest revamped to include more characters, more events, and more adventure
A new ending, with a reworked and expanded plot
Existing quests updated and polished Storyline background expanded
Companions now banter and argue with one another
Invest skill points in the new Dual Wielding ability to improve your proficiency
Hurl elemental, area of effect, status-setting, and damage-causing grenades. This comes with the new Bombardier ability, letting you spend skill points to improve your proficiency.
Wands are brand new one-handed ranged weapons dealing elemental damage. They come pre-charged with an additional powerful skill that the player can invoke 1-4 times, depending on his or her Wand skill level. The skill also determines your attack range with wands (from barely-out-of-melee to bow-level).
Explorer Mode. Formerly "Casual," Explorer players will face less-fierce enemies and enjoy a higher chance of knocking them dead, freeing up the player's time to discover, craft, sleuth, and travel outside of combat.
Classic Mode. Formerly "Normal". What we suggest for first-time players (who've played a classic cRPG before).
Tactician Mode. A brand new game setting featuring smarter, stronger enemies to challenge combat-oriented players.
Honour Mode. All the challenge of Tactician Mode, but in Honour Mode you only have a single save and a single life (no resurrecting!) at your disposal. If your character goes down, it's game over.
Tactician and Honour modes feature re-designed encounters and puzzles, including new mechanics, monsters, skills, and challenges. Enemy AI is more intelligent and designed to defend against past players' most commonly-used tactics.
New traps have been added, making tactics, puzzles, and simply moving around in the world more challenging than ever.
New skills and skill system
New tiered skill system ('Novice', 'Adept', 'Master') allows you to learn devastating new abilities as you progress in your chosen school of magic. 15+ new skills featuring custom animations and damage
Existing encounters have been improved and re-balanced to provide a more consistent experience throughout all zones.
Now includes upgraded AI to better counter the player’s tactics
Updated system makes crafting more intuitive
New creatures - Elemental Wards, Enchanted Armours, Bolt-stricken Zombie, Arcane Vortex, Nether Jester, Poison Slug, Spitfire Totem, Void Crystal, Oilskin ExploSkeleton, Soul of Desperation, Angry Chest
New cut scenes added and old cut scenes improved
Skills have been rebalanced and redistributed into skill schools in more cohesive themes.
Balancing changes have made mid- and late-game combat more dynamic and engaging.
Existing Abilities and Talents have been rebalanced.
Weapon ability progression has been updated to differentiate play styles based on weapon types (e.g. the 'Two-handed weapons' theme now focuses on slow weapons that do monstrous damage with each strike, while 'Dual Wielding' is centered around unleashing a hail of rapid blows on your enemies.)
Vendors offer more variety and sell better loot.
Magical items are built up differently. Items' use requirements have been revised.
Economy (gold value and rarity of all items) has been revised.
Treasure generation and traders have been overhauled to be less random and use a system that guarantees better variation in drops over time.
Weapons, armour, shields, potions, and statuses have been rebalanced.
Our top-secret formulas that calculate hit chances, crit chances, damage, armour, blocking, and more have all been carefully revised and improved.
'Saving throws' formula has been improved.
New items and item combos added for creating wands and grenades
360-degree camera, with improved art assets for viewing at all angles
Reworked visuals for improved performance
Textures were updated to improve performance DirectX 11 was added, which improves performance. Because of these changes, the game now only works on 64-bit Operating Systems.
New animations for new weapon types (wands and dual wielding)
New effects and animations for new skills, but also enhanced existing skills
New custom animations for all NPCs
New animations for new creatures and destructibles

Our top-secret formulas that calculate hit chances, crit chances, damage, armour, blocking, and more have all been carefully revised and improved.