As usual, this is, by no means, comprehensive.  Just some changes coming up.

• Minimum camera angle increased
• Camera view moves to icon view quicker.
• Fusion Power plant cost reduced from 600 to 200.
• Singularity power plant reduced from 1000 to 500
• Eyes of Universe grants a culture point (testing this concept) upon being constructed
• Research Mission cost reduced from 100 to 80
• Credits mission reduced from 120 to 100
• Production mission reduced from 100 to 60 (testing)
• Exotic Resources mission cost reduced from 240 to 140
• Influence mission cost reduced from 180 to 150
• Laser ship component cost reduced from 30 to 25
• Particle beam cost reduced from 45 to 32
• New component: Experimental Laser
• Disruptor cost reduced from 55 to 50
• Enhanced disruptor cost reduced from 55 to 50
• New component: Advanced disruptor. More powerful, costs 2 Elerium.
• Similar balance changes to kinetic and missile weapons
• New Advanced versions of most weapons where there is now an additional "advanced" component that uses even more of a special resource than the enhanced.
• Citizen approval ratings when you're at war with their species penalty increased except for the Mimots.
• Drengin and Yor approval penalty greatly increased.
• Diplomacy: If your civilization is too far out of range then "Ripe for conquest" and "we want to conquer the galaxy" are no longer counted since they don't apply to you.
• Default out of range bonus reduced from 5 to 1.
• Xenophobic multiplier on out of range diplomacy bonus increased from 2 to 4.
• Another balance pass on prestige victory multipliers.
• Big revamp on the AI ship design system to make their ships focus on what they are best at. (i.e. all beam, all kinetic or all missile rather than a mess).
• All starbase modules now cost 1 starbase module (duh)
• Sector scanners no longer cost a Thulium. (but do cost a module..)
• Surveillance System module no longer costs Thuliuim.
• Starbase relic upgrades no longer rely on exotic resources but instead require Promethion to upgrade.
• Starbase military enhancements no longer rely on exotic resources but now require Durantium instead.
• Starbase factory enhnacements no longer require exotic resources but instead use Durantium.
• Starbase lab modules no longer require exotic resources but instead use Promethion.
• Starbase economic enhancements no longer use exotic resources but instead use a bit of Promethion AND Durantium.
• Starbase Culture modules no longer require exotic resources but instead use Durantium.
• Starbase pinnacle (the top level upgrades) do still require an exotic resource.
• Tiny ship mass slots increased from 1 to 2.
• Tiny ship default moves increased from 8 to 9
• Small ship mass slots increased from 3 to 4
• Small ship default moves increased from 7 to 8
• Medium ship mass slots increased from 6 to 8
• Medium ship default moves increased from 6 to 7
• Large ship mass slots increased from 9 to 10
• Influence gradually grows based on turn number. (balance pass)

Update #1

• Lots of new flavor text.
• Mimot lore story expanded on.
• New super project: Iridia Exchange. Provides +4 adjacency bonuses Wealth trait civs only.
• Wealthy trait civs no longer get a capital mainframe and other super projects for tech
• Slight decrease in the cost of planetary improvmeents (balance)
• Certain planetary trait improvements now provide adjacency bonuses.
• Turns now represent ONE MONTH instead of ONE WEEK
• Slightly more players recommended per map size.
• Day of the month is randomized for flavor
• One year anniversary event changed to Five year (60 turns) event.
• Starting Cluster size chosen by player enforced.
• Overcrowded pentalty to approval reduced.
• Crime penalty to approval reduced (until it gets pretty high then BAM!)
• AI more likely to build asteroid miners.
• General AI improvement on what ships to build when
• AI much smarter about what improvements to build.
• AI less likely to send out missions from its shipyards
• AI puts more effort into building up planetary production 
• AI better about choosing technologies during times of war
• AI a bit better at specializing citizens
• AI much MUCH more reasonable about trading techs
• Visual pass on making the ship designer screen cleaner
• Leaders assigned to factions provide greater benefits.
• Fixed missing HP icon in the ship designer screen.
• New policy: Wealth Civs only = The Great Expansion. 3X to planetary growth on capital world.
• Yor no longer result in a negative approval rating when you are at war with their species.
• Iridium default expectations increased by 8.
• Drastic reduction in the cost of weapons and defenses in ship construction (increase military ship pacing) [testing balance]
• New component: Efficient constructor module.  Wealthy trait civs get a cheaper version of the constructor module.
• No Ship component costs more than 1 slot.
• Text: Speed changed to moves
• Text: Tiny changed to Tiny Hulls (will require some UI adjustments because it's longer)
• Text X changed X Hulls
• Text references of weeks changed to months.
• Text: Capacity changed to Equipment slots
• Text: Base cost changed to Base Manufacturing cost
• Text: Favor ship tooltip in shipyard now mentions it is a toggle
• Text: Reference to Galactic Achievements changed to Galactic Challenges
• Text: Mention of map size change to number of sectors.

• Corporate Sector (Irridium) start with Translator tech.  Will require an advisor change so that we aren't looking at a blank diplomacy screen.

• Subspace stream lanes are now 100X faster for ships rather than 20 times.
• Marginal worlds are now either class 1 or 2 rather than up to 5 (eliminate confusion as to what that number is). Really these should probalby just be class 1 planets.
• Marginal worlds are more specific about what kinds of raw resources they have based on what type of world it is.
• Earth minerals increased from 3 to 4
• Drengi wealth reduced from 5 to 3
• Drengi fertility reduced from 12 to 10
• Altaria minerals increased from 3 to 4
• Iridia minerals increased from 3 to 4
• Iridia wealth reduced from 8 to 4
• Iridia planet class increased from 25 to 29
• Iconia minerals increased from 3 to 4
• Iconia Fertility reduced from 6 to 5
• Kryseth minerals increased from 3 to 4
• Kryseth fertilty reduced from 12 to 10
• Arcea minerals increased from 3 to 6
• Arcea tech reduced from 3 to 2
• Fen minerals increased from 3 to 5
• Fen Tech reduced from 3 to 2
• Balance and variance pass across all map sizes and sector counts. Big big changes here.
• Occasional planet frequency changed from 1.75 to 1.8 (slightly more planets).

This will be part of next week's update.