No, that has not been mentioned. In DD and BD you could save pretty much whenever you wished (using unique names or a set of quicksaves), so I would think that should continue for ED. The XBox version probably auto-names saves based on time and location (the PC version may do so as well, though I would expect the option to change the name or add a comment), but I can not see any reason to restrict the number of saves.

Console game developers use limited save slots at least in part because consoles started off with little memory. Larian is coming from a PC development background, though, so I doubt they would put restrictions in that were unnecessary.