The time has mainly gone on getting Inform into a decent shape for public use. I suppose the plot of 'Curses' makes a sequel conceivable when compared with, say, the plot of 'Hamlet' but none is planned.
What I would pay much more attention to are the few points where the player can inadvertently make a career decision. Most players end up back-tracking, though some actually enjoy this.
If you're setting a game during the Cuban Missile Crisis, look through a library. find out what people were wearing, what other issues were in the news, how houses were furnished, what cars were being driven. Especially include things which now seem foreign.
I try to make puzzles range all the way from easy to hard, and to leave many open at once. Graham Ne
I'm rather pleased with the new manuals. I see Inform now as a gauche young adult, having got past the stage of growing out of his shoes every few months.