Something tells me we are going to hear about things along the lines of:
- Retail becomes the central game version where players convene. Retail achievements are linked to classic game versions, so any achievement that only exists on a classic version will be added to the retail version upon completion. This would help keep classic versions alive and consolidate all players on retail.
- All previous WoW expansions are planned for release on a single layered server per expansion per server type per region for better management and consolidation of players - all phases of a given expansion are released within one year giving players one new-old-expansion every year.
- Retail gives quests to complete achievements on classic versions for a remastered version of the classic gear sets/mounts...etc. Instead of scaling old content to max level on retail, this is the approach that is likely to be chosen. Old gear sets obtainable only from the BMAH remain exclusive to it and won’t compete with the new high quality remakes of the same gear designs.
- Pet battles are available on the mobile app, both dungeons and PvP battles.