Here I am going to write a list of the features that will be included for free in the pre-expansion patch. I think that most people will be satisfied with what is included because even though RoS will have a lot of new things to explore, the pre-expansion patch will also have at least half of all those features.Adventure Mode (includes bounties, travelling between all acts in one game and Nephalem Rifts)New Paragon systemRevamped itemization (less drops, but better, set items are actually sets now with green beams when dropped on the ground, legendaries have very unique effects etc)Removal of Auction HouseRevamp of current existing skills (for class balance)New difficulty system! (Now you no longer have to play through the campaign four times, instead only once. The current plans are to unlock act 1 in adventure mode when you defeat act 1 in campaign, same with act 2, 3 etc).These features will not be included for free, and purchasing RoS will be required
None of this has been confirmed 100% but blue posts have stated that all core features of the game; the things that are already in the game, but are being recreated is what will be in the pre-expansion patch.
A blue post has mentioned that typically, Blizzard Pre-expansion patches are release 2 weeks to 2 months before the release of the expansion. Let's hope for a pre-expansion release in March, upon removal of the Auction House, eh?
These features will be included for free in the pre-expansion patch
A whole new, completely randomized Act (new monsters, new bosses, new events, new storyA new playable class (Crusader)Clans (Might be for free? I doubt it though)Ladders (if they are to be implemented, they have NOT been confirmed)New level cap (70)4th passive skill slot (not sure if this has been confirmed? Any clarification would be great thanks)New skills and runes beyond level 60The Mystic Artisan (can change item's stats and change the look of your clothes)Nephalem Trials have been confirmed to be put on hold (to prevent postponing the release date of RoS) and is most likely to be implemented in a patch after Reaper of Souls has been released. This means that we don't know if this feature will be for free, or purchasing RoS will be required.
If I have forgotten anything, please don't hesitate to let me know. You may also correct me if some of my list is false. If this thread manages to be kept alive, I will update it frequently for sure, so please, ask questions, make suggestions, any comment!
Edited by HarkuBass#1660 on 11/18/2013 7:02 AM PST