D&D 5e has been called by it's creators a Living Rules System. What this means is that:
If we know something is an issue, we’ll let you know that we plan to address it. When we have some ideas, we’ll put those in front of the community and playtest them before making any changes. If a change is well liked and solves problems, we’ll implement it as an option for DMs to use.
We don’t plan on rushing things. It might be a year from when we raise an issue to when we have a fix. But as soon as we can, we’ll share that solution as an option for DMs and players to use as they wish. Groups that never felt the effect of the issue in the first place can ignore it, while those looking for a solution will have a well tested, proven response.
After the release of the starter set, we saw an example of this. In an Article called "Building Adventures" it gives some suggested guidelines for XP daily budgets.
The article then gives a disclaimer which reads:
Warning: These are not final rules. Although they've been playtested thoroughly, you can expect some adjustments before they debut in the Dungeon Master's Guide in November.
However, at the bottom of the article it says:
You might find that you'll use this system of challenge rating and XP budgets to familiarize yourself with fifth edition encounters and combat, then slowly dial it back as your intuitive sense of the party's strengths and your own personal DMing style take over. And as with any tool, you might end up using these guidelines in ways that their creators could never have predicted. Have fun, and make the rules your own.
Now, let's see if anyone manages to use this article and the material in the Starter Set to hit 20th level by GenCon . . .
It seems clear that the intention is for these rules to be used to play the game, and to understand the game.
However, when I asked a question based on these rules, it was mentioned that:
@WesleyObenshain We can ask questions about what has been released so far just fine. We can't ask questions that draw on a combination of released and unreleased rules though. @WesleyObenshain The question is actually based on the encounter/XP guidelines, which do not appear in any published material. It appears in the playtest and in a preview article that carries a bolded warning that these are not final rules.
I suspect that during the year between the official releases, and official surveys, there will be many Legends and Lore articles, or other WOTC articles that introduce rule changes or ideas that will not be in it's final form.
So, are rules which are published by WOTC and given to the public to use, allowed to have questions based on them, or only if they are published as a "final rule", or only if they are published in books which have a non-digitial counterpart?