I do not think anyone "thinks" there will be a new shaolin monk or konquest mode... but I think the general consensus is that it would be boss if it did.
The reason it all came up is that there was a tweet from one of the major NRS dudes that was going on about how they left clues in the menu system to some huge new and amazing single player mode that is not story mode.
This leads people to three things... Shaolin Monk Mode, Konquest Mode or a mini game mode like Kombat Chess.... and people just started saying... "wow that would be so awesome if that happened".
No one really knows what the new solo mode the guy was tweeting about, we know nothing at all apart that it is apparently "huge" and "amazing" and it is going to "blow our minds".