Will Elsa become a Disney princess

Of course she will be a DP. She has to! She is a deuteragonist like Jasmine. I would be weird to see Anna in the line up without Elsa. Sister belong together.
There is no "Queen" lineup so she has to be in the DP line up.

Disney even announced that both of them will be added in late 2014 or the summer of 2014

That's because Elsa's a queen.

She was ONCE a princess but then after her parents died, she MUST take care of the village since she's the older one.

I'm sure Elsa will be a DP... even if she's a Queen.

Disney Princesses are girls that show characteristics of a role model for young girls. It's like a universal label, regardless of the real story of the princess.

And I'm sure millions of girls would be disappointed if Elsa wasn't a DP. And Disney doesn't want to disappoint little princesses, now do they?

I hope not, because Elsa is already a queen so, Anna will become official DP.

She will be!!!