Please check http://lodestone.finalfantasyxiv.com...gn.html#legacy

But the answer is yes.
Copied right out of the post:

Benefits of being a Legacy member

1. Legacy members will be able to play at a specially discounted subscription price post-launch of version 2.0. Membership Tiers Price Billing Cycle Max Playable
Characters
per World Max Playable
Characters
Total Legacy $9.99 * 30 Days 8 40 Entry $12.99 * 30 Days 1 8 Standard $14.99 * 30 Days 8 40 * All subscription fees are subject to change in accordance with the terms of the FINAL FANTASY XIV User Agreement.
Note: Pricing for other features, including longer billing cycles and Retainer Characters, have not yet been decided.

And then copied from the Letter from the Producer:

This information is also available on the Lodestone, but the fee structure will undergo a revamp when official service begins for version 2.0. I’ve personally reviewed and approved the changes, which are driven by our desire to provide you with a global standard of service. Payments will be made easier to understand, and more payment options will be introduced, such as prepaid time cards.

Under the new fee structure, the basic service fee and the character fee will be consolidated. In the case of a 30-day billing cycle, players will be able to choose from the two payment options below,
Entry Plan – $12.99 USD/£7.69/10.99 €: One character per World
Standard Plan – $14.99 USD/£8.99/12.99 €: Eight characters per World
Players who qualify for the Legacy Campaign will be able to subscribe to the standard plan for the discounted price of $9.99 per month—the same as the current fee—for the entire duration of FFXIV’s service. (Please note that the actual price may vary due to fluctuations in the exchange rate.)