Modpack will be still for MC1.7.10 and will have GT6 included. GT6 has massive overhaul of everything (similiar to change from GT4 - GT5) so your InfiTech 2 worlds will NOT be compatible. Everyone will need to start from scratch.
Main diferences between IT:2 and IT:R is following: Modpack will promote GT as almost only way to create stuff from other mods. For example: Buildcraft chipsets will not be craftable in BC Assembly Table, they will be included in one of the GT machines (in IT:2 it would mean Laser Engraver or Assembly Table); AE2 world crafting will be disabled (Growing Fluix Crystals and similiar - where you get seed and you need to drop it in water - will be included in machine similiar to current Autoclave - it will be easier to automate, but also bit more expensive on power).
Same goes with certain Forestry machines (Thermionic Fabricator, Carpenter, Still).
Next difference is Ender Rails will be enabled, so if you are little bit advanced then you will be able to use "easy" teleporting system with railcraft/enderio Dim Transceiver. Still the crafting recipe will be somewhat more expensive and will require you to be at least MV or HV.
Few mods will get removed, mainly speaking about ProjectZulu, 3D Furnace, Binnie Mods, Dynamic Lights, Multimine, etc...
Some new mods "maybe" will appear as well.
This time around it will be more really focused on GT and its machines, so machine recipes will not be that much changed. Recipe changes will still happen, but in less intensive way.
Lastly i think this will be the Major change... modpack will be not only for regular GT players, but also it will be intended to teach GT noobs. In perfect world it will be enjoyable for both GT players and newbies. This will be accomplished by use of HQM.
I am not going to give ANY ETA. We need to wait for GT6 to be playable, we also probably need Minetweaker to support the new GT6.
IT:R will be released in few steps.
Alpha,
Beta,
Pre-Stable,
Stable....
Alpha will be pure modpack with just basic tweaks, just to make sure everything works.
Beta will contain more indepth tweaks, and during that stage I will be finalizing them. In
Pre-Stable release the work on the Quests will be happening.
Stable... will be finished product ready to play without (hopefully) any issues. Of course stuff might get changed in the Stable as the time will pass, but some massive changes should not happen.
Moving worlds from
Alpha into
Beta will not be recommended.
Beta worlds then should be compatible with
Stable. But for the best experience with the quests,
Stable is the place where to start. Of course that doesn't mean you shouldnt play from the first
Alpha. Feedback will be highly appreciated and will certainly help during the development.
Regarding the InfiTech 2 development: I know I said on twitter and FTB forum, that IT:2 is going to stop. That was before I learned about Gregs intention to do complete overhaul. So IT:2 development will still be a thing, but... new features will not be probably added (except MineChem integration on which is currently being worked on). Major bugs and exploits will still be fixed. Minor things like Waila showing incorect tooltips on Spruce Logs... thats really a minor not gamebreaking issue.
So please keep reporting stuff on Github. Even if you are not sure that it is a bug or it is intended. Better be safe than sorry. Try not to post issues on the FTB thread because, there is big chance I will miss it, or I will forget about it. GitHub is the best place to report issues.
If you have any concerns or questions regarding IT:2 or IT:R, feel free to ask them. I will try to reply to them ASAP (if I will know the answer).
Places where to ask: Twitter (
http://www.twitter.com/jasonmcray), Our website (
http://infinity-minecraft.co.uk), Mail (
[email protected]), FTB Thread (
http://bit.ly/infitech2). If you want my atention on FTB thread, the best is probably to tag me in the message (
@Jason McRay).