Amid many arcane notes about the ins and outs of the committee work involved, there's this basic bit of good news:

Adobe's PDF has become an accepted ISO standard.

Why do you care? Here's a quote::

Standardization through ISO of market-dominating technologies is good for everyone. The technology is already entrenched, so it does not entrench things further, but it provides a better basis for substitution (good for user choice and competitors) and interoperability (good for user choice and the dominator company and peripheral developers): everyone wins. They need to do this voluntarily before regulators use closed standards as evidence in anti-trust procedings.

In other words, since PDF is basically a standard anyway, the ISO certification means that other vendors can make tools with less risk of Adobe pulling the rug out from under them. This in turn leads to more competition and better products, including stable extensions of the standard.
Oreilly piece