We are pleased to announce several new items for your amusement including...
3 New tanks!
5 New Types of ammo!
9 New Technologies!
Murder and death to all alien life forms!
So, without further ado...
The Perseus Light Tank
Car woes got you down? Miss the ability to do drive by's in your not-so-friendly bug neighborhood? Sick of every tree completely stopping your progress?
Be woeful no more! This new vehicle brings back a machinegun to the top of your ride, allowing safe scouting of any dangerous area. Keeping some of the speed of the car, the Perseus light tank also has limited tree busting abilities, although too many bumps will irrevocably damage the vehicle.
Perseus
The Hydra Rocket Tank
Too many biters crawling for your walls? Machine guns not clearing them fast enough?
Clear hordes of enemies with ease! This completely new design brings rockets back with a vengeance! These low flying, anti-personnel rockets can deal with many biters all at once! With a machinegun for backup fire, the Hydra includes heavy spalling to ensure that explosives fired near your tank won't damage you! However, the increased racking and armor plating for this means the Hydra is slightly less maneuverable than the average tank. But when you can fire this many rockets, who needs to move quickly?
Hydra
The Goliath Heavy Tank
Are the nests getting out of hand? Can't deal with the big worms protecting the core of the enemy forces?
Enter the Goliath Heavy Tank! This bad boy packs TWO cannons, for ease of ammunition storage/changing. If the tank cannons can't clear the bugs fast enough, use the coaxial Heavy Machine Gun to clear those pesky bastards out. The premier tank for protection, the Goliath Heavy Tank will easily crush the enemies before you, while killing anything at range you don't like! Loaded down with Tankwerkz (c) signature High Explosive shells or Depleted Uranium shells, no bitter nest will be able to stand in your way!
Goliath
New Ammunition
Tankwerkz is proud to unveil its new line of ammunition for the Tank, Hydra Rocket Tank, and the Heavy Machine Gun.
Explosive Shells
Dealing a decent amount of damage to a wide area, these shells are perfect for your early horde clearing needs. Unlocked with the core Tank technology, this shell will never let you down!
High-Explosive Shells
These shells are Tankwerkz longest developed and best product. These shells work wonders for cleaning out everything from biters to trees to other colonists! Unlocked with their own research, you'll never leave home without them!
Depleted Uranium Shells
These shells are best for targeting nests, as their penetration power cleans out lines of smaller enemies while still punching holes in nests. Unlocked with their own research, these will be your best friend! (while you are all alone on a planet of aliens)
Hydra Rockets
Fast firing, anti-personnel rockets! What more could you need?
Heavy Machine Gun Ammo
A prerequisite to researching the Goliath Heavy Tank, the Heavy Machine Gun is only mounted on that colossus of combat. Fed with long belts of piercing bullet ammo, the HMG fires them at twice the velocity of their predecessor!
Ammo Types
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As an aside, I did reduce the damage of the core tank shell. I felt that it did too much damage out of the box for a pretty easily researched tech. The Depleted Uranium round does the same damage as the old Cannon shell. Also, the Depleted Uranium round is blue because green faded into the selected ammo background and was hard to see.
Hopefully the animation for the Hydra turret looks good enough, I'm much more of a programmer than a graphic designer.
I am looking at doing a chemical/biological warfare tank, but I can't seem to get the weapon to damage the close in biters enough for my taste. I'll keep trying tho!
All comments, critiques, and requests are welcome!
Edit: Forgot to add a bit of code in case you already have tanks researched!
Hope you have something on this 
its what preventing factorio from launching on 0.11.19+ !