Update 3/24/15:

American Airlines has confirmed that the integration of AAdvantage and Dividend Miles will begin, though the process could take several days.

Tomorrow (3/25/15) is the last day you can book US Airways Dividend Miles awards.

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The reliable rumor is that American Airlines and US Airways plan to combine their mileage programs on March 28, which is this Saturday.

US Airways and American Airlines legally merged in December 2013.
They announced in October 2014 that the AAdvantage and Dividend Miles programs would combine in the second quarter (April 1 to June 30) of 2015.
They announced a few

I just booked myself a trip to Cuba with miles. One direction I am flying on a single award from the United States to Cuba. On the return, I am flying two awards: Cuba to Colombia and Colombia to the United States.

I used American Airlines, Asiana, and Lufthansa miles, all of which are easily available to Americans.
Can Americans Travel to Cuba?
Here is the State Department's page on visiting Cuba.

I am going to travel to Cuba on a general license as a journalist.

American Airlines updated the look of its award charts today with no update to actual award prices. (Here are expert predictions for the timing and extent of the next award chart changes from American Airlines.)

I liked the old charts better, especially the partner one where all prices could be displayed in one small image.

Now both the American Airlines chart and partner chart are spread across several pages.

Fiji Airways is releasing great award space for two passengers in economy from Los Angeles to Nadi, Fiji that you can book with American Airlines miles.

Fiji

Fiji Airways is releasing great award space for two passengers in economy from Los Angeles to Nadi, Fiji that you can book with American Airlines miles.

Fiji

French Polynesia is an award I get asked to book frequently through my Award Booking Service, including awards to the main tourist islands of Tahiti, Bora Bora, and Mo’orea. Award space is excellent to French Polynesia with American Airlines miles year round.

Here's the thing: you can only book awards to Tahiti.

French Polynesia is an award I get asked to book frequently through my Award Booking Service, including awards to the main tourist islands of Tahiti, Bora Bora, and Mo’orea. Award space is excellent to French Polynesia with American Airlines miles year round.

Here's the thing: you can only book awards to Tahiti.

Update at 5:55 PM ET: An email today from Dividend Miles says that Dividend Miles will be ended within 30 days:
In October, we announced we would combine our frequent flyer programs in the second quarter of this year. And now, we're on track to bring the US Airways Dividend Miles® program into the AAdvantage® program within the next 30 days.

On many routes, Etihad releases tons of Business and First Class award space within one week of departure. You can book this ultra-luxury award space without fuel surcharges with American Airlines miles.

Twitter follower Patrick found four Etihad First Class award seats this week on a flight from Los Angeles to Abu Dhabi and asked whether that was normal.

@OneMileataTime @garyleff @milevalue Has Etihad started releasing more first class space closer to date? See http://t.co/V8oIw8sAAW

— Patrick Srail (@patricksrail) March 8, 2015

The answer is that it depends on the route.

On many routes, Etihad releases tons of Business and First Class award space within one week of departure. You can book this ultra-luxury award space without fuel surcharges with American Airlines miles.

Twitter follower Patrick found four Etihad First Class award seats this week on a flight from Los Angeles to Abu Dhabi and asked whether that was normal.

@OneMileataTime @garyleff @milevalue Has Etihad started releasing more first class space closer to date? See http://t.co/V8oIw8sAAW

— Patrick Srail (@patricksrail) March 8, 2015

The answer is that it depends on the route.