Super exited we get 5 (!) new coaster types next update, and it looks like we get some much requested coasters!
My thoughts on the coaster types:
- Gnarler - modern train on wooden supports: This is probably a GCI wooden coaster with Millenium Flyer trains like you said. These trains are similar to the trains of the RMC Topper Track coaster we have in the game. This one has been one of the most requested coaster types.
http://www.coastergallery.com/2013/Kentucky_Rumbler-9.jpg
- 'Viper One - multi-launch coaster' and 'Power Up - compact coaster'. Both with a dual direction station launch. Now this could be a mack mega coaster, but I don't believe there exist any that do multi directional launches through the station. Same for Intamin Blitz coasters. My guess at least one of these is a Gerstlauer Infinity coaster (which has been requested many times as well), probably the 'compact' one. These do feature multi directional launched through the station.
See Gold Rush - Slagharen for exmaple:
http://www.pretparknet.nl/wp-content/uploads/2017/04/slagharen-gold-rush-1.jpg
Now that leaves us with the other launch coaster. Now they can't have two of the same coaster types right, that would be silly (looking at you, B&M wingcoasters.. [tongue]). This one is probably an Intamin Blitz or Mack Mega coaster, probably a hybrid of those types because they are very similar in real life. I know of at least one Mack ride that has a multi directional station launch (the water-ride in Walibi Belgium) and I have seen concepts of Mack coasters that use this same mechanism.
Taron - an Intamin Blitz coaster featuring multiple launches:
http://www.phantasialand.de/assets/images/0/ga_bt_taron_massanfertigung-b8c71200.jpg
Another reason I believe we will be getting an Intamin Blitz/Mack Mega coaster type is because of the next coaster type...
- Bolt - modern boomerang coaster: A modern boomerang coaster, interesting.. Could it be the new generation Vekoma boomerang coasters? I really hope so! And let it just so happen that within the mess of Taron's amazing track work hides one of these Vekoma boomerang coasters! Coincidence? I think not. [tongue] Now let's just hope Frontier gives us generic coaster trains!
The new generation Vekoma boomerang family coaster:
http://i.imgur.com/eL5ggds.jpg
- De-Gen - 21st century train on traditional looping track: Now I don't think we will be getting another Vekoma/Arrow mk-1200 coaster type. Perhaps they used the Boomerang coaster type to make the Vekoma looping/launched coaster which would be awesome, but not really a new coaster type imho. Classic looping track probably means the track from the classic Schwarzkopf looping coaster! Also a highly requested coaster type.
https://i.ytimg.com/vi/3cw6x-eDy50/maxresdefault.jpghttps://i.ytimg.com/vi/3cw6x-eDy50/maxresdefault.jpg
So that's what I think the new coaster types are going to be. In addition we also get to re-color the wooden supports (FINALLY!!!!). I hope we get to see more improvements to coasters this update, namely a continuous-roll option, or whatever Frontier found to be the best solution to the coaster smoothness problem.