Since the computers are down, and I don't see anything on the site...
Does O'Hana dinner count as 1 table service meal on the Dining plan, or 2? Last time I heard, it was 1, but I was also told it was subject to change. ^^;
The "subject to change" is a standard disclaimer that everything and anything could change at the discretion of Disney. It's not just Disney, but most companies have that type of "cover themselves" statements.
Highly, extremely, exceedingly, very unlikely that it will change. The last change in dining credits was Le Cellier dinner going from 1 to 2 TS credits and that was announced more than 6 months in advance.
It's one credit, always been one. The Spirit of Aloha Luau costs 2 credits.
And Disney leaves everything subject to change. But they will announce if a change is made. When Le Cellier was switched to 2 credits for dinner the announcement was made months in advance.